ORCID Profile
0000-0002-8355-3182
Current Organisations
Bond University
,
UCLA
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Publisher: Oxford University Press (OUP)
Date: 11-01-2016
Abstract: Research into Theory of Mind (ToM) in alcohol use disorder (AUD) is sparse and the extant findings contradictory. The objective of this paper was to conduct a meta-analysis to determine whether in iduals with AUD show ToM deficits across the available published literature. A comprehensive literature search was performed with the PsychInfo, PubMed and Web Science databases for studies from 1990 to March 2015, pairing the keywords 'alcohol' and 'theory of mind'. Results were filtered and eight studies met the inclusion criteria and were included in the final meta-analysis. Results showed that in iduals with AUD (n = 187) displayed reduced ToM compared to controls (n = 187). Hedges' g was -1.62 [(-2.28, -0.96), SE = 0.66, P < 0.01], which is indicative of a large effect size. The percentage of males had a significant impact on the effect size, Q = 7.90, P = 0.005, while IQ and level of education did not. Results of this study suggest that AUD may be associated with impaired understanding of others' intentions and emotions, which can leave an in idual vulnerable to misinterpreting social cues. Clinical care implications of the findings, limitations of the study, and suggestions for future research are discussed.
Publisher: Elsevier BV
Date: 08-2003
Publisher: Wiley
Date: 07-1988
Publisher: Elsevier BV
Date: 11-2015
Publisher: Informa UK Limited
Date: 04-03-2022
Publisher: Elsevier BV
Date: 07-2014
Publisher: Wiley
Date: 05-2006
DOI: 10.1080/09595230600657758
Abstract: The controversy over possible MDMA-induced serotonergic neurotoxicity in human recreational ecstasy users is examined critically in light of recent research findings. Although the designs of such studies have improved considerably since the 1990s, the evidence to date remains equivocal for a number of reasons, including (1) inconsistent findings on the existence and reversibility of persistent ecstasy-related serotonergic and cognitive deficits (2) lack of clear association between changes in brain imaging measures and functional deficits attributed to MDMA-induced neurotoxicity (3) the contribution of concomitant cannabis or other drug use to both brain imaging abnormalities and cognitive deficits (4) methodological shortcomings such as failure to adequately match s les of ecstasy users and controls (5) the questionable relevance of animal models of MDMA-induced neurotoxicity to typical human patterns of ecstasy use and (6) the potential role of inherent pre-drug deficits in serotonergic systems, impulse control and executive cognitive function that may predispose to excessive use of drugs including ecstasy. Given the retrospective nature of nearly all studies of ecstasy users to date, the controversy over whether MDMA has ever caused neurotoxicity or cognitive deficit in human ecstasy users is likely to continue for some time without resolution.
Publisher: Elsevier BV
Date: 2006
DOI: 10.1016/J.JPSYCHORES.2005.06.066
Abstract: The "psychic healing" ability of a well-known Australian psychic was subjected to a televised experimental test. Twenty volunteers suffering from chronic pain were recruited by newspaper advertisements. Half were randomly assigned to the treatment or control condition using a double-blind procedure. Comparison of pre- and posttreatment McGill Pain Questionnaire ratings indicated no effect of psychic healing. However, pretreatment questionnaire ratings of belief in psychic healing and related phenomena were significantly correlated with improvement in McGill Pain Questionnaire ratings irrespective of treatment condition. Results suggest that anecdotal reports of effective psychic healing and "faith healing" are attributable to the power of belief.
Publisher: Wiley
Date: 20-10-2023
DOI: 10.1002/IJOP.12956
Publisher: Informa UK Limited
Date: 2009
Publisher: Informa UK Limited
Date: 12-07-2010
Publisher: Informa UK Limited
Date: 11-2012
DOI: 10.1080/02791072.2012.736842
Abstract: Psychedelic drugs have long been known to be capable of inducing mystical or transcendental experiences. However, given the common "recreational" nature of much present-day psychedelic use, with typical doses tending to be lower than those commonly taken in the 1960s, the extent to which illicit use of psychedelics today is associated with mystical experiences is not known. Furthermore the mild psychedelic MDMA ("Ecstasy") is more popular today than "full" psychedelics such as LSD or psilocybin, and the contribution of illicit MDMA use to mystical experiences is not known. The present study recruited 337 adults from the website and newsletter of the Multidisciplinary Association for Psychedelic Studies (MAPS), most of whom reported use of a variety of drugs both licit and illicit including psychedelics. Although only a quarter of the s le reported "spiritual" motives for using psychedelics, use of LSD and psilocybin was significantly positively related to scores on two well-known indices of mystical experiences in a dose-related manner, whereas use of MDMA, cannabis, cocaine, opiates and alcohol was not. Results suggest that even in today's context of "recreational" drug use, psychedelics such as LSD and psilocybin, when taken at higher doses, continue to induce mystical experiences in many users.
Publisher: Informa UK Limited
Date: 10-06-2013
Publisher: Springer Science and Business Media LLC
Date: 04-04-2023
DOI: 10.1007/S10862-023-10034-Y
Abstract: Alexithymia has been linked to risky or problematic alcohol use, with a common interpretation invoking deficient emotion regulation and use of alcohol to cope with distress. An alternative explanation positing a general deficit of interoception in alexithymia suggested that poor awareness of internal cues of overconsumption may promote excessive drinking. The present study assessed predictions based on these hypotheses in 337 young adult alcohol users recruited online. Participants completed validated questionnaire indices of alcohol use, alexithymia, emotion regulation, interoceptive sensibility, and sensitivity to reward and punishment. Alcohol use was positively correlated with alexithymia and reward sensitivity, and negatively correlated with emotion regulation as expected, but was uncorrelated with interoceptive sensibility. Alexithymia was not significantly correlated with most dimensions of interoceptive sensibility but was highly negatively correlated with emotion regulation. Hierarchical regression controlling for demographic variables indicated that alexithymia, emotion regulation, sex, and sensitivity to reward and punishment were significant predictors of alcohol use levels. Bootstrapped mediation test controlling for all other variables indicated mediation of the association between alexithymia and alcohol use by deficient emotion regulation but not interoceptive sensibility. Results supported the emotion regulation deficit interpretation of the association of alexithymia with alcohol use. Limitations concerning interoception measurement, online s les, self-report measures, cross-sectional designs, and collection of data during the COVID-19 pandemic are discussed. Future research could follow up on these findings by testing interoceptive accuracy in addition to interoceptive sensibility in relation to alexithymia and alcohol use.
Publisher: Elsevier BV
Date: 02-2016
DOI: 10.1016/J.PSYCHRES.2016.01.016
Abstract: Alexithymia and alcohol outcome expectancies were investigated in 355 alcohol-dependent treatment seekers. Patients with alexithymia gave stronger self-report ratings of expectancies of affective change related to beliefs that alcohol leads to negative mood states and assertion, that alcohol enhances social skills, compared to those without alexithymia. The findings suggest that alcohol-dependent outpatients with alexithymia may drink to experience intensified negative emotions and improved social functioning.
Publisher: Springer Science and Business Media LLC
Date: 15-01-2023
Publisher: Wiley
Date: 08-03-2019
DOI: 10.1002/JCLP.22772
Abstract: A developmental model of alexithymia in relation to alcohol-related risk was examined. Validated indices of parental bonding, adult attachment, alexithymia, theory of mind (ToM), alcohol-related risk, and mood were administered to a nonclinical s le of 286 alcohol-using men and women. Hierarchical regression incorporating demographic and psychosocial variables accounted for 44% of the variance in alexithymia. Modeling indicated a significant path from dysfunctional maternal bonding to insecure adult attachment to alexithymia to risky drinking a separate path indicated an indirect effect of alexithymia in association between the deficient ToM and risky drinking. Findings were consistent with a developmental model where dysfunctional parental bonding in childhood manifests in adulthood as insecure attachment and alexithymia, the latter reflecting the insufficient acquisition of emotion regulation skills alexithymia, in turn, increases the risk of problematic drinking as an emotion regulation strategy.
Publisher: No publisher found
Date: 2000
Publisher: Informa UK Limited
Date: 04-01-2011
DOI: 10.1080/00224540903366776
Abstract: The popular notion that alcohol intoxication enhances perceptions of the physical attractiveness of the opposite sex has been inconsistently supported. The current study tested intoxicated and non-intoxicated persons of both genders in naturalistic settings after measuring their blood alcohol concentration (BAC) by a breath test. A s le of 80 heterosexual university student social drinkers was recruited at a c us pub and c us parties over a 3-month period to take a survey rating the attractiveness of unfamiliar faces of the opposite gender presented in photographs. Attractiveness ratings were positively correlated with BAC. Analysis of covariance (ANCOVA) was conducted on attractiveness ratings with independent variables of gender and BAC group, with three levels of the latter: non-intoxicated (BAC = 0), moderately intoxicated (BAC .01% - .09%), and highly intoxicated (BAC .10% - .19%). Both intoxicated groups gave significantly higher attractiveness ratings than non-intoxicated controls. The findings confirm the "beer goggles" phenomenon of folk psychology for both genders, although the mechanism remains unclear.
Publisher: Elsevier BV
Date: 08-2012
DOI: 10.1016/J.ADDBEH.2012.03.028
Abstract: Two forms of impulsivity, rash impulsiveness and reward sensitivity, have been proposed to reflect aspects of frontal lobe functioning and promote substance use. The present study examined these two forms of impulsivity as well as frontal lobe symptoms in relation to risky drinking by university students. University undergraduates aged 18-26years completed the Alcohol Use Disorders Identification Test (AUDIT), Barratt Impulsiveness Scale (BIS-11), Sensitivity to Punishment and Sensitivity to Reward Questionnaire (SPSRQ), Frontal Systems Behavior Scale (FrSBe), and a demographics questionnaire assessing age, gender, and age of onset of weekly drinking (AOD). AUDIT-defined harmful drinkers reported earlier AOD and scored higher on BIS-11, the Sensitivity to Reward (SR) scale of the SPSRQ, and the Disinhibition and Executive Dysfunction scales of the FrSBe compared to lower risk groups. Differences remained significant after controlling for duration of alcohol exposure. Path analyses indicated that the influence of SR on AUDIT was mediated by FrSBe Disinhibition, whereas the influence of BIS-11 on AUDIT was mediated by both Disinhibition and Executive Dysfunction scales of the FrSBe. Findings tentatively suggest that the influence of rash impulsiveness on drinking may reflect dysfunction in dorsolateral prefrontal and orbitofrontal systems, whereas the influence of reward sensitivity on drinking may primarily reflect orbitofrontal dysfunction. Irrespective of the underlying functional brain systems involved, results appear to be more consistent with a pre-drinking trait interpretation than effects of alcohol exposure.
Publisher: Informa UK Limited
Date: 12-2012
Publisher: Wiley
Date: 08-03-2022
DOI: 10.1002/IJOP.12840
Abstract: There has been considerable interest in trait correlates of excessive or problematic use of the internet, known as internet addiction. However, the concept of internet addiction has been criticised as too broad. Specific forms of excessive internet use, for ex le, social media, may have different trait correlates compared to internet use in general. The present study compared levels of internet and social media addiction symptoms in relation to three traits previously linked to one or the other form of excessive behaviour: alexithymia, narcissism and social anxiety. There were 217 young adult social media‐ and internet‐using participants aged 18–35 years recruited from two university c uses in southeast Queensland, Australia. They completed an online questionnaire battery that included a demographics questionnaire and widely used, validated measures of narcissism, alexithymia and social anxiety. Hierarchical regressions indicated that after controlling for demographic variables, internet addiction symptoms were predicted by social anxiety, narcissism and alexithymia, whereas social media addiction symptoms were predicted only by social anxiety and narcissism. Results suggest that the association of alexithymia with internet addiction symptoms does not encompass excessive use of social media, and support the contention that the concept of internet addiction may be too broad.
Publisher: Informa UK Limited
Date: 13-05-2011
Publisher: Elsevier BV
Date: 02-2010
Publisher: Informa UK Limited
Date: 15-03-2014
DOI: 10.1080/02791072.2013.876522
Abstract: Indices of mood, mood regulation, and executive functioning were examined in 61 current smokers who have smoked daily for at least one year, 36 ex-smokers who had not smoked a cigarette for at least one year, and 86 never-smokers. All participants completed the following measures online: Depression Anxiety Stress Scales (DASS-21), the Negative Mood Regulation (NMR) scale, the Frontal Systems Behavior Scale (FrSBe), the Fagerström Test for Cigarette Dependence (FTCD), and the Alcohol Use Disorders Identification Test (AUDIT). Multivariate analysis of variance (MANOVA) followed by Tukey post-hoc tests revealed significant differences (p < .01) such that current smokers indicated worse functioning than both ex-smokers and never-smokers on DASS, NMR, and FrSBe, as well as heavier drinking as measured by AUDIT. These differences remained significant even after controlling for AUDIT scores. Results most plausibly reflect a return to pre-smoking baseline brain function in long-term abstinent ex-smokers.
Publisher: Informa UK Limited
Date: 09-2019
DOI: 10.1111/AJPY.12236
Publisher: Informa UK Limited
Date: 2008
Publisher: Elsevier BV
Date: 04-2006
DOI: 10.1016/J.ADDBEH.2005.05.050
Abstract: Attachment, fear of intimacy and differentiation of self were examined by means of self-report questionnaires in 158 volunteers, including 99 clients enrolled in addiction treatment programs. As expected, clients (who were undergoing treatment for alcoholism, heroin addiction, hetamine/cocaine addiction or cannabis abuse) reported higher levels of insecure attachment and fear of intimacy, and lower levels of secure attachment and differentiation of self, compared to controls. Insecure attachment, high fear of intimacy and low self-differentiation appear to characterize clients enrolled in addiction treatment programs. Such characteristics may reflect a predisposition to substance problems, an effect of chronic substance problems, or conceivably both.
Publisher: Springer Science and Business Media LLC
Date: 10-08-2023
DOI: 10.1007/S12144-022-03511-2
Abstract: A distinction has been made between primary and secondary exercise dependence, with the latter defined as excessive exercise secondary to disordered eating and weight concerns. Based on theoretical considerations from research on the roles of trait factors in addictions, the present study used validated scales to assess alexithymia, sensitivity to reward and punishment, emotion regulation and interoception in relation to exercise dependence symptoms in Australian male and female non-binge eaters ( n = 228) and severe binge eaters ( n = 126) aged 18–30 yr. In both groups, exercise dependence symptoms were significantly positively associated with reward sensitivity and interoceptive awareness, with the latter two variables predicting exercise dependence symptoms in hierarchical regression models punishment sensitivity was significantly negatively related to such symptoms. Alexithymia was significantly associated with exercise dependence symptoms only in non-binge eaters in severe binge eaters, alexithymia explained 0% of unique variance. Male sex was associated with more exercise dependence symptoms in severe binge eaters only. Participants in the severe binge group scored significantly higher on measures of exercise dependence, alexithymia, risky alcohol use, and sensitivity to reward and punishment, and significantly lower on emotion regulation, compared to those in the non-binge group. Hierarchical regression models explained 25% of variance in exercise dependence symptoms in non-binge-eaters and 43% in severe binge eaters. Findings are discussed in terms of the distinction between primary and secondary exercise dependence, the role of alexithymia, study limitations including data collection during the COVID-19 pandemic in Australia, and suggestions for future research.
Publisher: Informa UK Limited
Date: 11-09-2018
DOI: 10.1080/02791072.2018.1517228
Abstract: In young adults at university, social interaction anxiety has been linked to elevated risk of alcohol-related problems, as has alexithymia. The present study sought to assess whether social interaction anxiety is, like alexithymia, associated with the primary motive of drinking to cope with negative affect. There were 126 undergraduates (76 females, 50 males), aged 18-25 years, who were recruited from two southeast Queensland universities to complete validated self-report measures of problematic drinking, alexithymia, drinking motives, and social interaction anxiety. As predicted, social interaction anxiety was positively related to problematic drinking and coping motives for drinking. Alexithymia mediated the relationship of social interaction anxiety with coping motives. Findings were consistent with a developmental hypothesis of the links between social anxiety, alexithymia, and drinking motives. Given the cross-sectional design of the current study, longitudinal research is ultimately needed to confirm such interpretations of alexithymia and alcohol use among socially anxious young adults at university.
Publisher: Elsevier BV
Date: 07-2010
Publisher: Wiley
Date: 09-1991
DOI: 10.1111/J.1469-8986.1991.TB01993.X
Abstract: Effects of a moderate dose of alcohol on the electrodermal orienting reflexes evoked by novel signal, novel nonsignal, and common nonsignal stimuli were assessed. Social drinkers were randomly assigned to the four cells of a balanced placebo design, with 10 males and 10 females per group. They drank a beverage consisting of either tonic water only, or tonic water plus enough vodka to raise blood alcohol levels to approximately .05%. Following drinking and absorption periods, spontaneous and evoked skin conductance responses (SCRs) were recorded. Subjects pressed a footpedal whenever they heard an odd stimulus tone in a series. Alcohol increased the frequency of spontaneous SCRs, increased the number of incorrect pedal-press responses, and selectively enhanced SCRs evoked by the signal tone, p less than .05. Results are interpreted in terms of a hypothesized selective effect of alcohol on frontal cortical inhibitory functions.
Publisher: American Psychological Association (APA)
Date: 08-2016
DOI: 10.1037/EMO0000138
Abstract: Attentional control theory (ACT) describes the mechanisms associated with the relationship between anxiety and cognitive performance. We investigated the relationship between cognitive trait anxiety, situational stress and mental effort on phonological performance using a simple (forward-) and complex (backward-) word span task. Ninety undergraduate students participated in the study. Predictor variables were cognitive trait anxiety, indexed using questionnaire scores situational stress, manipulated using ego threat instructions and perceived level of mental effort, measured using a visual analogue scale. Criterion variables (a) performance effectiveness (accuracy) and (b) processing efficiency (accuracy ided by response time) were analyzed in separate multiple moderated-regression analyses. The results revealed (a) no relationship between the predictors and performance effectiveness, and (b) a significant 3-way interaction on processing efficiency for both the simple and complex tasks, such that at higher effort, trait anxiety and situational stress did not predict processing efficiency, whereas at lower effort, higher trait anxiety was associated with lower efficiency at high situational stress, but not at low situational stress. Our results were in full support of the assumptions of ACT and implications for future research are discussed. (PsycINFO Database Record
Publisher: Elsevier BV
Date: 07-2011
DOI: 10.1016/J.DRUGALCDEP.2010.11.015
Abstract: Up to fifty percent of alcohol dependent in iduals have alexithymia, a personality trait characterised by difficulties identifying and describing feelings, a lack of imagination and an externalised cognitive style. Although studies have examined alexithymia in relation to alcohol dependence, no research exists on mechanisms underlying this relationship. The present study examined the mediational effect of alcohol expectancies on alexithymia and alcohol dependence. 230 outpatients completed the Toronto Alexithymia Scale (TAS-20), the Drinking Expectancy Questionnaire (DEQ) and the Alcohol Use Disorder Identification Test (AUDIT). Regression analysis showed that alexithymia and alcohol dependence was, in two of three cases, partially mediated through alcohol expectancy. Alcohol expectancies of assertion and affective change show promise as mediators of alcohol dependence in in iduals with alexithymia.
Publisher: No publisher found
Date: 1994
Publisher: SAGE Publications
Date: 21-04-2021
DOI: 10.1177/0192513X211010206
Abstract: Alexithymia, fear of intimacy, attachment security, and mood variables were examined as predictors of satisfaction in couple relationships after accounting for age, sex, relationship length, and marital status. Participants were 158 adults (52% women and 48% men) in an ongoing couple relationship for 1-19 years. They completed validated measures of the variables of interest online. Bivariate correlations were significant for all predicted associations. Multiple mediation modelling examined the hypothesis that the low relationship satisfaction reported by those with alexithymia can be explained by fear of intimacy, insecure attachment, and negative affect, after accounting for relevant covariates. Mediation was indicated for fear of intimacy and negative affect. Such factors may merit particular attention by clinicians working with alexithymic clients in couples therapy.
Publisher: American Psychological Association (APA)
Date: 1998
Publisher: No publisher found
Date: 2000
Publisher: American Psychological Association (APA)
Date: 2015
DOI: 10.1037/EMO0000051
Abstract: Attentional control theory (ACT) predicts that trait anxiety and situational stress interact to impair performance on tasks that involve attentional shifting. The theory suggests that anxious in iduals recruit additional effort to prevent shortfalls in performance effectiveness (accuracy), with deficits becoming evident in processing efficiency (the relationship between accuracy and time taken to perform the task). These assumptions, however, have not been systematically tested. The relationship between cognitive trait anxiety, situational stress, and mental effort in a shifting task (Wisconsin Card Sorting Task) was investigated in 90 participants. Cognitive trait anxiety was operationalized using questionnaire scores, situational stress was manipulated through ego threat instructions, and mental effort was measured using a visual analogue scale. Dependent variables were performance effectiveness (an inverse proportion of perseverative errors) and processing efficiency (an inverse proportion of perseverative errors ided by response time on perseverative error trials). The predictors were not associated with performance effectiveness however, we observed a significant 3-way interaction on processing efficiency. At higher mental effort (+1 SD), higher cognitive trait anxiety was associated with poorer efficiency independently of situational stress, whereas at lower effort (-1 SD), this relationship was highly significant and most pronounced for those in the high-stress condition. These results are important because they provide the first systematic test of the relationship between trait anxiety, situational stress, and mental effort on shifting performance. The data are also consistent with the notion that effort moderates the relationship between anxiety and shifting efficiency, but not effectiveness.
Publisher: Elsevier BV
Date: 05-2011
DOI: 10.1016/J.ADDBEH.2011.01.014
Abstract: Numerous models have been proposed in an attempt to explain both alcohol use and alcohol abuse. Many of these models propose that drinking behaviour is the result of a complex interplay of cognitive and behavioural variables including coping strategies, alcohol expectancies and motives for drinking. However few studies have explored how these elements may work together to predict drinking. The current study proposed a mediational model of alcohol use in which coping strategies are related to alcohol expectancies, which in turn are related to drinking motives. Drinking motives were then viewed as proximal predictors of drinking behaviour. There were 454 participants (55.78% female) who completed self-report questionnaires assessing the above constructs. Approximately half the participants completed the questionnaires online, while the others completed the paper and pencil versions of the same measures. Findings generally supported the hypothesised model. The relationship between avoidant coping and drinking behaviour was mediated by alcohol expectancies of increased confidence and tension reduction, which in turn were related to drinking motives. As expected, drinking motives were positively related to drinking behaviour. Negative expectancies were also directly related to drinking behaviour. The results are discussed in light of cognitive models of drinking, and implications for prevention and early intervention of alcohol-use problems.
Publisher: Informa UK Limited
Date: 11-2013
DOI: 10.1080/02791072.2013.844525
Abstract: Risky or problematic alcohol use by young adults has been found to be associated with factors such as alexithymia, frontal lobe dysfunction, reward sensitivity, and impulsivity. One interpretation is that these factors reflect inherent traits that predispose to risky substance use in general, a notion examined in the present study. Alexithymia, everyday frontal lobe functioning, sensitivity to reward and punishment, and impulsivity were examined in 138 young adult cannabis users who were ided into Low Risk (n = 99) and Risky (n = 39) users according to their Cannabis Use Disorder Identification Test (CUDIT) scores. Risky cannabis use was significantly positively associated with alexithymia, multiple signs of frontal lobe dysfunction in everyday life, and impulsivity. A broader pattern of dysfunction was indicated for risky cannabis use than for risky alcohol use in this s le. Findings are interpreted as likely reflecting not only inherent traits that predispose to risky substance use in general, but also perhaps residual effects of recent heavy cannabis use in the Risky user group. Longitudinal research is needed to disentangle these competing possibilities.
Publisher: Wiley
Date: 04-1991
DOI: 10.1111/J.1360-0443.1991.TB03417.X
Abstract: Social drinker volunteers were randomly assigned to the four cells of a balanced placebo design, with 10 males and 10 females per cell. They consumed a beverage which contained either tonic water only, or tonic water plus sufficient vodka to induce peak blood alcohol levels of approximately 0.05%. Subjects then completed a computer version of the Wisconsin Card Sorting Test (WCST) in two runs. Compared to tonic only, beverage alcohol selectively increased per cent perseverative errors as well as other measures of perseveration and the number of trials, p less than 0.05. Results are interpreted in terms of an hypothesized differential action on functions of the frontal cortex in addition to possible non-specific effects of alcohol. Issues pertaining to expectancy interpretations are also discussed.
Publisher: Elsevier BV
Date: 08-2010
DOI: 10.1016/J.PSYCHRES.2009.09.015
Abstract: Confirmatory factor analyses were conducted to evaluate the factorial validity of the Toronto Alexithymia Scale in an alcohol-dependent s le. Several factor models were examined, but all models were rejected given their poor fit. A revision of the TAS-20 in alcohol-dependent populations may be needed.
Publisher: Wiley
Date: 15-09-2009
DOI: 10.1080/00207590802511759
Abstract: In English-speaking, Western-Anglo countries, where smoking has become stigmatized in recent decades as a result of widespread anti-smoking c aigns, smokers commonly report poorer psychological health on average than nonsmokers do. This may be indirectly related to the strong pressures to quit in such countries, as poorer psychological health is associated with a reduced likelihood of quitting, thus leading to a selection bias for smokers with relatively poorer psychological health. In the present study, 147 smoker and nonsmoker participants either came from Western-Anglo countries where smoking has become stigmatized (Australia, Canada, USA) or countries in regions where smoking remains relatively more accepted (Asia, Latin America, Europe). Smokers and nonsmokers were assessed on a widely used self-report measure of anxiety, depression, and stress. Multivariate analysis revealed a significant interaction between smoker status (smoker, nonsmoker) and country of origin (Western-Anglo, other) on psychological health ratings, with univariate analysis showing a significant interaction on anxiety scores. Among those from Western-Anglo countries, smokers reported significantly higher levels of anxiety than nonsmokers did, whereas there was no difference in anxiety between smokers and nonsmokers from other countries. There was no difference in the number of cigarettes smoked per day between the s les of smokers, indicating very similar levels of nicotine intake in the two groups. The findings support the notion that a selection bias for smokers with relatively poorer psychological health is occurring in Western-Anglo countries.
Publisher: Informa UK Limited
Date: 18-07-2021
Publisher: Springer Science and Business Media LLC
Date: 03-05-2013
Publisher: Elsevier BV
Date: 11-2014
Publisher: Informa UK Limited
Date: 02-10-2021
Publisher: Elsevier BV
Date: 05-2006
DOI: 10.1016/J.ADDBEH.2005.06.008
Abstract: Negative mood regulation (NMR) expectancies, stress, anxiety, depression and affect intensity were examined by means of self-report questionnaires in 158 volunteers, including 99 clients enrolled in addiction treatment programs. As expected, addicts reported significantly higher levels of stress, anxiety, depression and affect intensity and lower levels of NMR compared to non-addict controls. NMR was negatively correlated with stress, anxiety, depression and affect intensity. The findings indicate that mood self-regulation is impaired in addicts. Low NMR and high affect intensity may predispose to substance abuse and addiction, or alternatively may reflect chronic drug-induced affective dysregulation.
Publisher: Informa UK Limited
Date: 09-06-2018
Publisher: Elsevier BV
Date: 02-2020
Publisher: Informa UK Limited
Date: 12-09-2018
DOI: 10.1080/02791072.2017.1366604
Abstract: Given the well-established associations of the personality traits alexithymia, impulsivity, and reward sensitivity with problematic use of a variety of substances, including alcohol and cannabis, the present study sought to determine whether daily tobacco smoking is similarly linked to these traits. Male and female adults aged 18 to 40 years were recruited from the local Australian community, allowing comparison of demographically similar s les of current daily smokers (n = 47) to never-smokers (n = 59) on the relevant self-report measures. Multivariate analysis of covariance revealed that current smokers scored significantly higher than never-smokers on indices of negative mood, impulsiveness, and risky alcohol use, after controlling for social desirability. No significant group differences were found on indices of alexithymia, reward sensitivity, or punishment sensitivity. Results suggest that chronic daily cigarette smoking may be an exception to the maladaptive behaviors associated with alexithymia, and is driven primarily by mood regulation and poor impulse control.
Publisher: American Psychological Association (APA)
Date: 2000
Publisher: Elsevier BV
Date: 07-2014
Publisher: Elsevier BV
Date: 02-2015
DOI: 10.1016/J.ADDBEH.2014.10.008
Abstract: Acute alcohol intoxication has been found to increase perseverative errors on the Wisconsin Card Sorting Test, a well known neuropsychological index of prefrontal cortical functioning, in both laboratory and naturalistic settings. The present study examined the relationship between levels of alcohol consumption at c us drinking venues and performance of the Iowa Gambling Task (IGT), another neuropsychological test designed to assess prefrontal cortex dysfunction, after controlling for potential confounding variables including habitual alcohol intake (as a proxy for alcohol tolerance), trait impulsivity, and everyday executive functioning. The 49 participants of both genders aged 18 to 30years were recruited at the relevant venues and showed a broad range of blood alcohol concentrations (BACs) from virtually zero (.002%) to .19%. After controlling for demographic variables, habitual use of alcohol and illicit drugs, and frontal lobe related behavioural traits including impulsivity and disinhibition, BAC negatively predicted gambling money won on the last two trial blocks of the IGT. Trait impulsivity and habitual alcohol use were also significant predictors. Results are discussed in terms of acute effects of alcohol on brain systems and the behavioural consequences of such effects on decision making.
Publisher: Informa UK Limited
Date: 28-10-2011
Publisher: Elsevier BV
Date: 2015
Publisher: Elsevier BV
Date: 11-2010
DOI: 10.1016/J.ADDBEH.2010.06.022
Abstract: Laboratory studies have demonstrated that acute alcohol intoxication can disrupt performance on neuropsychological tests of executive cognitive functioning such as the Wisconsin Card Sorting Test (WCST). However, the generalizability of such findings to typical self-regulated alcohol intake in social settings can be questioned. In the present study, 86 young adults were recruited at Australian bars to perform a computer version of the WCST. Participants displayed blood alcohol concentrations (BACs) across a range from 0 to 0.15%. Although self-report measures of typical alcohol consumption, impulsivity, and frontal lobe related everyday functioning were all intercorrelated in line with other recent findings, multiple regression indicated that these measures did not predict perseverative errors (PE) nor non-perseverative errors (NPE) on the WCST, whereas BAC uniquely predicted PE but not NPE. The results were consistent with a dose-dependent selective disruption of prefrontal cortical functioning by alcohol. There were no differences in performance between participants tested on the ascending limb of the BAC curve and those tested on the descending limb. Alcohol-associated perseveration may reflect the inhibitory effect of alcohol-induced dopamine release in the prefrontal cortex.
Publisher: Elsevier BV
Date: 04-2011
DOI: 10.1016/J.ADDBEH.2010.12.016
Abstract: Up to fifty per cent of in iduals with Alcohol use disorders (AUD) also have alexithymia a personality construct hypothesized to be related to attachment difficulties. The relationship between alexithymia, craving, anxious attachment and alcohol-dependence severity was examined in 254 patients participating in a Cognitive-Behavioral Therapy (CBT) program for alcohol-dependence. Participants completed the Toronto Alexithymia Scale (TAS-20), the Obsessive Compulsive Drinking Scale (OCDS), the Revised Adult Attachment Anxiety Subscale (RAAS-Anxiety) and the Alcohol Use Disorder Identification Test (AUDIT). MANOVA indicated that in iduals with alexithymia reported significantly higher levels of total OCDS, obsessive thoughts about alcohol, and compulsive drinking urges and behavior, compared to the non-alexithymic group. Regression analyses found that anxious attachment partially mediated the relationship between alexithymia and craving. Anxious attachment may be a potential treatment target to reduce alcohol consumption in those with alcohol-dependence and alexithymia.
Publisher: Informa UK Limited
Date: 16-07-2011
Publisher: Informa UK Limited
Date: 20-08-2019
Publisher: Informa UK Limited
Date: 2008
Publisher: Elsevier BV
Date: 02-2010
DOI: 10.1016/J.ADDBEH.2009.09.011
Abstract: Motives to drink alcohol are widely thought to be the proximal cognitive factors involved in the decision to consume alcohol beverages. However it has also been argued that the ability to restrain drinking may be a more proximal predictor of drinking behaviour. The current study aimed to examine the relationships between drinking motives, drinking restraint and both alcohol consumption and alcohol-related problems in a s le of young adults. A s le of 221 young adults (aged 17-34 years) completed self-report measures assessing drinking behaviour, motives for drinking and drinking restraint. Multiple regression analyses revealed that coping, enhancement and social motives were related to alcohol consumption and alcohol-related problems, while Cognitive and Emotional Preoccupation with drinking was related to all criterion variables. Further, the relationship between coping motives and drinking behaviour was mediated by preoccupation with drinking. The results are discussed in light of the roles of drinking motives and drinking restraint in risky drinking among young people, and implications for prevention and early intervention are presented.
Publisher: Wiley
Date: 03-03-2011
Publisher: Informa UK Limited
Date: 1991
DOI: 10.3109/10826089109058933
Abstract: Subjects were randomly assigned to the four cells of the balanced placebo design, with 10 males and 10 females per cell. Following told-alcohol or told-no alcohol beverage instruction manipulations, participants consumed either a vodka-tonic beverage containing a dose of vodka sufficient to induce a peak blood alcohol level of 0.05% or a beverage containing only tonic water. Subjects' self-report ratings of beverage alcohol content indicated that alcohol overrode the effects of beverage instructions in the told-tonic/given-alcohol condition. It was concluded that the design cannot independently evaluate effects of both alcohol and beverage instructions when behaviorally significant alcohol doses are administered.
Publisher: Cambridge University Press (CUP)
Date: 04-2011
DOI: 10.1016/J.EURPSY.2010.09.010
Abstract: The primary purpose of this meta-analysis was to explore, clarify and report the strength of the relationship between alexithymia, as measured by the Toronto Alexithymia Scale (TAS-20), and parenting style as measured by the Parental Bonding Instrument (PBI). Web of Science, PsycInfo, PubMed and ProQuest: Dissertations and Theses searches were undertaken, yielding nine s les with sufficient data to be included in the meta-analysis. Evidence indicated moderate to strong relationships between maternal care and alexithymia, and between maternal care and two of the three TAS-20 alexithymia facets (Difficulties Describing Feelings and Difficulties Identifying Feelings, but not Externally Oriented Thinking). Moderate relationships were observed for both maternal- and paternal-overprotection and alexithymia respectively, and for overprotection (both maternal and paternal) and Difficulties Describing Feelings. This study is the first meta-analysis of the relationship between parenting styles and alexithymia, and findings confirm an especially strong association between maternal care and key elements of alexithymia. This review highlights the issues that still remain to be addressed in exploring the link between parenting style and alexithymia.
Publisher: No publisher found
Date: 1998
Publisher: American Psychological Association (APA)
Date: 11-2000
Publisher: Elsevier BV
Date: 11-2013
DOI: 10.1016/J.ADDBEH.2013.07.002
Abstract: Indices of mood, mood regulation expectancies and everyday executive functioning were examined in adult current smokers and never-smokers of both genders in Australia (N = 97), where anti-smoking c aigns have dramatically reduced smoking prevalence and acceptability, and in China (N = 222), where smoking prevalence and public acceptance of smoking remain high. Dependent measures included the Depression Anxiety Stress Scales (DASS-21), the Negative Mood Regulation (NMR) expectancies scale, the Frontal Systems Behavior Scale (FrSBe), the Fagerström Test for Nicotine Dependence (FTND) and the Alcohol Use Disorders Identification Test (AUDIT). Multivariate analyses of covariance (MANCOVAs) controlling for demographic and recruitment related variables revealed highly significant differences between current smokers and never-smokers in both countries such that smokers indicated worse moods and poorer functioning than never-smokers on all dependent measures. Chinese smokers scored significantly worse on all dependent measures than Australian smokers whereas Chinese and Australian never-smokers did not differ on any of the same measures. Although nicotine dependence level as measured by FTND was significantly higher in Chinese than Australian smokers and was significantly correlated with all other dependent measures, inclusion of FTND scores as another covariate in MANCOVA did not eliminate the highly significant differences between Chinese and Australian smokers. Results are interpreted in light of the relative ease of taking up and continuing smoking in China compared to Australia today.
Publisher: Informa UK Limited
Date: 03-2020
DOI: 10.1111/AJPY.12258
Publisher: Informa UK Limited
Date: 13-06-2014
DOI: 10.1080/23279095.2013.850693
Abstract: The present study examined a widely used self-report index of trait impulsiveness in relation to performance on a well-known neuropsychological executive function test in 70 university undergraduate students (50 women, 20 men) aged 18 to 24 years old. Participants completed the Barratt Impulsiveness Scale (BIS-11) and the Frontal Systems Behavior Scale (FrSBe), after which they performed the Tower Test of the Delis-Kaplan Executive Function System. Hierarchical linear regression showed that after controlling for gender, current alcohol consumption, age at onset of weekly alcohol use, and FrSBe scores, BIS-11 significantly predicted Tower Test Achievement scores, β = -.44, p < .01. The results indicate that self-reported impulsiveness is associated with poorer executive cognitive performance even in a s le likely to be characterized by relatively high general cognitive functioning (i.e., university students). The results also support the role of inhibition as a key aspect of executive task performance. Elevated scores on the BIS-11 and FrSBe are known to be linked to risky drinking in young adults as confirmed in this s le however, only BIS-11 predicted Tower Test performance.
Publisher: Elsevier BV
Date: 08-2022
DOI: 10.1016/J.APPET.2022.106073
Abstract: Alexithymia has been linked to various excessive behaviors as a likely risk factor, including binge eating. Such relationships are often attributed to deficient emotional self-regulation in alexithymia, ostensibly leading to the use of maladaptive, externalized behaviors as strategies for coping with distress. An alternative view is that alexithymia reflects a fundamental deficit of interoceptive awareness that, in the case of binge eating, would suggest that internal satiety cues are poorly recognized, promoting overconsumption. The present study assessed the relationship between alexithymia and binge eating in the context of these competing hypotheses. A large online s le of young adults (n = 532) completed validated measures of alexithymia, emotion regulation, interoception, binge eating, emotional eating motivation, and sensitivity to reward and punishment. Correlations were as expected except for interoception, which showed minimal association with alexithymia or binge eating. In a hierarchical regression controlling for age, gender, education level and student status as covariates, binge eating was predicted by emotional eating motivation, emotion regulation (a negative predictor), alexithymia, and reward sensitivity, with the final model explaining 53% of variance in binge eating. Bootstrapped path analyses controlling for all other variables indicated that the relationship between alexithymia and binge eating was mediated by deficient emotion regulation but not deficient interoception, and that the relationships of both alexithymia and emotion regulation with binge eating were mediated by emotional eating motivation. Results are consistent with the notion that the association of alexithymia with binge eating reflects deficient emotion regulation in alexithymia, which can lead to adoption of maladaptive, externalized behaviors such as binge eating for coping with distress.
Publisher: Informa UK Limited
Date: 31-10-2019
DOI: 10.1080/10826084.2018.1524490
Abstract: Alexithymia, a relatively stable personality trait characterized by difficulties identifying and describing feelings and externally oriented thinking, has been linked to both substance use disorders and eating disorders. In nonclinical s les, alexithymia is associated with heavier consumption of alcohol and caffeine. Both are psychoactive drugs, but unlike most drugs they are typically consumed in the context of palatable and calorie-rich products. Given the association of alexithymia with disordered eating, the present study evaluated the hypothesis that heavier consumption of caffeine by those with high levels of alexithymia may be motivated by the palatable and caloric aspects of common caffeine products rather than by drug-seeking. There were 224 participants aged 17-63 years who completed instruments assessing demographics, alexithymia, emotional eating, caffeine consumption, alcohol consumption, negative moods, and reward sensitivity. As predicted, alexithymia was positively related to emotional eating as well as consumption of caffeine and alcohol, and alexithymia was a significant predictor of caffeine intake in regression models. However, there was no indication of mediation by emotional eating. Alexithymia is characterized by deficient emotion regulation and negative moods, hence use of drugs and/or foods to regulate emotions, combined with poor interoceptive awareness, may account for excessive consumption of drugs or foods as alternative emotion regulation strategies in those with high levels of this trait.
Publisher: Informa UK Limited
Date: 06-05-2014
Publisher: Informa UK Limited
Date: 06-2006
DOI: 10.1080/02791072.2006.10399838
Abstract: Psychedelic drugs such as LSD and psilocybin are often claimed to be capable of inducing life-changing experiences described as mystical or transcendental, especially if high doses are taken. The present study examined possible enduring effects of such experiences by comparing users of psychedelic drugs (n = 88), users of nonpsychedelic illegal drugs (e.g., marijuana, hetamines) (n = 29) and non illicit drug-using social drinkers (n = 66) on questionnaire measures of values, beliefs and emotional empathy. S les were obtained from Israel (n = 110) and Australia (n = 73) in a cross-cultural comparison to see if values associated with psychedelic drug use transcended culture of origin. Psychedelic users scored significantly higher on mystical beliefs (e.g., oneness with God and the universe) and life values of spirituality and concern for others than the other groups, and lower on the value of financial prosperity, irrespective of culture of origin. Users of nonpsychedelic illegal drugs scored significantly lower on a measure of coping ability than both psychedelic users and non illicit drug users. Both groups of illegal drug users scored significantly higher on empathy than non illicit drug users. Results are discussed in the context of earlier findings from Pahnke (1966) and Doblin (1991) of the transformative effect of psychedelic experiences, although the possibility remains that present findings reflect predrug characteristics of those who chose to take psychedelic drugs rather than effects of the drugs themselves.
Publisher: Elsevier BV
Date: 02-2016
Publisher: Informa UK Limited
Date: 15-10-2019
DOI: 10.1080/10826084.2018.1512628
Abstract: Personality traits previously known as risk factors for alcohol use disorder (AUD) were assessed in 29 young adult children of alcoholics (COAs) and 68 young adult children of nonalcoholics (non-COAs). Male and female university students (M Results indicated that personality traits of alexithymia, reward sensitivity, and impulsivity, as well as negative moods, were significantly elevated in COAs compared to non-COAs, independent of current alcohol consumption and drinking history. Findings are consistent with familial transmission of AUD-associated personality traits in COAs, presumably via influences of genetics and/or familial environment.
Publisher: Informa UK Limited
Date: 02-2005
Publisher: Informa UK Limited
Date: 2006
Publisher: Elsevier BV
Date: 02-2012
DOI: 10.1016/J.ADDBEH.2011.10.012
Abstract: Recent studies have indicated that 45-67% of those in treatment for alcohol use disorders suffer from alexithymia, a multifaceted personality trait characterized by difficulties identifying and describing emotions and an externally oriented cognitive style. The high reported prevalence rates of alexithymia among those with alcohol dependence led to speculation that alexithymia is a personality dimension that may predispose to risky or problematic alcohol use. This notion was examined in 314 adult volunteers (54% female) aged 18-45 years (M=27.6 years), all of whom reported at least occasional alcohol consumption, who completed online surveys assessing alexithymia (Toronto Alexithymia Scale, or TAS-20), parental alcoholism (Children of Alcoholics Screening Test, or CAST), everyday signs of frontal lobe dysfunction (Frontal Systems Behavior Scale, or FrSBe) and risky alcohol use (Alcohol Use Disorders Identification Test, or AUDIT). TAS-20 scores were positively correlated with the index of parental alcoholism CAST, index of frontal lobe dysfunction FrSBe and measure of alcohol-related problems AUDIT. Chi-square test showed an association between TAS-20-defined alexithymia and being the offspring of an alcoholic parent as defined by CAST. Regression analysis showed that frontal lobe dysfunction (FrSBe) mediated the relationship between alexithymia (TAS-20 total score) and risky alcohol use (AUDIT). The findings suggest that alexithymia is related to deficiencies in frontal lobe functioning that may reflect a heritable predisposition to alcohol problems.
Publisher: Informa UK Limited
Date: 08-08-2014
DOI: 10.1080/02791072.2014.942043
Abstract: Abstract Alexithymia refers to difficulties with identifying, describing, and regulating one's own emotions. This trait dimension has been linked to risky or harmful use of alcohol and illicit drugs however, the most widely used psychoactive drug in the world, caffeine, has not been examined previously in relation to alexithymia. The present study assessed 106 male and female university students aged 18-30 years on their caffeine use in relation to several traits, including alexithymia. The 18 participants defined as alexithymic based on their Toronto Alexithymia Scale (TAS-20) scores reported consuming nearly twice as much caffeine per day as did non-alexithymic or borderline alexithymic participants. They also scored significantly higher than controls on indices of frontal lobe dysfunction as well as anxiety symptoms and sensitivity to punishment. In a hierarchical linear regression model, sensitivity to punishment negatively predicted daily caffeine intake, suggesting caffeine avoidance by trait-anxious in iduals. Surprisingly, however, TAS-20 alexithymia scores positively predicted caffeine consumption. Possible reasons for the positive relationship between caffeine use and alexithymia are discussed, concluding that this outcome is tentatively consistent with the hypo-arousal model of alexithymia.
Publisher: American Psychological Association (APA)
Date: 02-2016
DOI: 10.1037/ADB0000135
Abstract: Alexithymia is characterized by difficulty identifying feelings, difficulty describing feelings, and an externally oriented thinking style. Alexithymia has been described as a trait-like risk factor for the development of alcohol use disorders. Few studies have investigated the absolute (whether mean scores change over time) and relative (extent to which relative differences among in iduals remain the same over time) stability of alexithymia among men and women with alcohol dependence, or have considered potential underlying mechanisms. Social learning processes contribute to and maintain alcohol problems. The reinforcement of alcohol expectancies is one plausible mechanism that links the difficulties in emotional processing associated with alexithymia and alcohol use. The present study investigated the stability of alexithymia as well as alcohol expectancy as a mediator of alexithymia. Three hundred fifty-five alcohol-dependent patients were enrolled in a cognitive behavioral treatment program. Ninety-two alcohol-dependent patients completed assessments at baseline and at 3-month follow-up. Results indicated that total Toronto Alexithymia Scale (TAS-20 Bagby, Parker, & Taylor, 1994) mean score, difficulty identifying feelings, and difficulty describing feelings decreased significantly over time with a larger decrease in alexithymia mean scores for females. Externally oriented thinking mean scores did not change. The TAS-20 and its subfactors demonstrated significant correlations, from baseline to follow-up, which were stronger for males than for females. Regression analyses showed that the total TAS-20 mean scores, difficulty identifying feelings, and difficulty describing feelings were partially mediated through assertion alcohol expectancies. In conclusion, this suggests that alexithymia has relative stability and is a trait-like factor among alcohol-dependent treatment seekers.
Publisher: Informa UK Limited
Date: 19-05-2020
Publisher: Informa UK Limited
Date: 2004
Publisher: SAGE Publications
Date: 19-12-2020
Abstract: Like alcohol or other drugs, music is often enjoyed by humans for its mood-altering effects. However, there is substantial in idual variation in emotional responding to music (ERM). The present study investigated potential roles of trait variables in ERM. Recruitment and testing of 205 adult regular music listeners was accomplished online. They were asked to complete the Geneva Emotional Music Scale (GEMS) retrospectively by rating the felt intensity of 45 music-related emotions based on what they typically experienced when listening to their favorite music. They also completed instruments assessing traits of alexithymia, affect intensity, and empathy, as well as the Big Five factors. Alexithymia, affect intensity, and empathy, but not the Big Five, were moderately positively correlated with ERM as measured by GEMS. In a hierarchical regression, alexithymia and empathy were significant positive predictors of ERM after controlling for the other variables extraversion was also significant in the final model. The role of empathy as a predictor of ERM was consistent with the emotional contagion interpretation of ERM. The unexpected positive relationship of alexithymia with ERM suggests that alexithymic listeners may rely on music to help them experience emotions more fully. Limitations and potential implications of the findings are discussed.
Publisher: Elsevier BV
Date: 03-2009
DOI: 10.1016/J.ADDBEH.2008.10.016
Abstract: All human beings experience emotion. However a number of in iduals have difficulties recognising, processing and regulating their emotions. This set of emotional "deficits' is classified as alexithymia. The prevalence rate of alexithymia in alcohol use disorders is between 45 and 67%. The objective of this paper is to review the published research on alexithymia and alcohol use, assess the methodological quality of this evidence, and draw the findings together to present a critical update on the relationship between alexithymia and alcohol use disorders. Yet, few research studies have comprehensively investigated alexithymia in alcohol use disorders, and a number of key issues still remain to be addressed in exploring the veracity of the link between alexithymia and alcohol use. For ex le, limited evidence exists regarding the association between alexithymia, alcohol consumption and severity of alcohol dependence. Furthermore, there is no current knowledge about the predictive utility of alexithymia in relation to more well researched and established psychological drinking constructs. Although alexithymia is often considered a risk factor for the development of alcohol use disorders, there is little evidence to support this notion. Given that alexithymia may have the potential to interfere with treatment outcomes, a better understanding of the role of alexithymia in alcohol use is needed.
Publisher: American Psychological Association (APA)
Date: 08-1994
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 04-2003
DOI: 10.1016/S0306-4603(01)00253-2
Abstract: Severity of opioid dependence, and performance on two successive runs of the Wisconsin Card Sorting Test (WCST), were assessed in 39 right-handed male and female methadone patients who had been randomly assigned to either a recently dosed (n=21) or 24 hr abstinent (n=18) condition. Results indicated that severity of opioid dependence was positively correlated with perseverative responses and errors on the second run of the WCST, p<.05. Further, controlling for the effect of dependence severity, patients in early methadone withdrawal made selectively more perseverative responses and errors than did recently dosed patients, p<.05, with no difference on nonperseverative errors. Findings were consistent with the hypothesis that opioid dependence, like alcoholism and cocaine addiction, is associated with disruption of executive cognitive functions mediated by the prefrontal cortex.
Publisher: Elsevier BV
Date: 2015
No related grants have been discovered for Michael Lyvers.