ORCID Profile
0000-0001-7319-3112
Current Organisations
Uppsala University
,
Karolinska Institutet
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Publisher: Oxford University Press (OUP)
Date: 07-2015
DOI: 10.5665/SLEEP.4802
Publisher: Wiley
Date: 23-09-2009
DOI: 10.1002/ACP.1611
Publisher: Informa UK Limited
Date: 11-01-2010
DOI: 10.1080/15299730903318483
Abstract: Analogue studies on intrusion development have found that visuospatial tasks performed during the encoding of aversive information reduce subsequent intrusion development. However, these studies cannot rule out a physical explanation in terms of simple movement. In the current study we addressed this issue. Healthy participants viewed an aversive film while performing a visuospatial movement task, a configurational movement task, or no task. Intrusive images from the film were reported in a diary during the week following film viewing. In line with an information-processing account of posttraumatic stress disorder, intrusion frequency was significantly reduced by the visuospatial movement task but not the configurational movement task compared to no task. This finding supports the role of visuospatial processing specifically in intrusion development.
Publisher: Psychology Press
Date: 04-05-2012
Publisher: Public Library of Science (PLoS)
Date: 08-01-2014
Publisher: Center for Open Science
Date: 12-03-2021
Abstract: Optimism is known to buffer against negative mood. Thus, understanding the factors that contribute to in idual variation in optimism may inform interventions for mood disorders. Preliminary evidence suggests that the generation of mental imagery-based representations of positive relative to negative future scenarios is related to optimism. This study investigated the hypothesis that an elevated tendency to generate positive relative to negative mental imagery during spontaneous future thinking would be associated with reduced negative mood via its relationship to higher optimism. Participants (N = 44) with varied levels of naturally occurring negative mood reported current levels of optimism and the real-time occurrence and characteristics of spontaneous thoughts during a sustained attention computer task. Consistent with hypotheses, higher optimism statistically mediated the relationship between a higher proportional frequency of positive relative to negative mental imagery during spontaneous future thinking and lower negative mood. Further, the relationship between emotional mental imagery and optimism was found for future, but not past, thinking, nor for verbal future or past thinking. Thus, a greater tendency to generate positive rather than negative imagery-based mental representations when spontaneously thinking about the future may influence how optimistic one feels, which in turn may influence one’s experience of negative mood.
Publisher: Oxford University Press (OUP)
Date: 05-03-2020
Abstract: Intrusive memories of psychological trauma are a core clinical feature of posttraumatic stress disorder (PTSD), and in the early period post-trauma may be a potential target for early intervention. Disrupted sleep in the weeks post-trauma is associated with later PTSD. The impact of sleep and intrusive memories immediately post-trauma, and their relation to later PTSD, is unknown. This study assessed the relationship between sleep duration on the first night following a real-life traumatic event and intrusive memories in the subsequent week, and how these might relate to PTSD symptoms at 2 months. Patients (n = 87) recruited in the emergency department completed a sleep and intrusive memory diary from the day of their trauma and for the subsequent week, with optional actigraphy. PTSD, anxiety, and depression symptoms were assessed at 1 week and 2 months. A U-shaped relationship was observed between sleep duration on the first night and intrusive memories over the subsequent week: sleeping “too little” or “too much” was associated with more intrusive memories. In iduals who met Clinician-Administered PTSD Scale (CAPS) criteria for PTSD at 2 months had three times more intrusive memories in the first week immediately post-trauma than those who did not (M = 28.20 vs 9.96). Post hoc analysis showed that the absence of intrusive memories in the first week post-trauma was only observed in those who did not meet CAPS criteria for PTSD at 2 months. Monitoring intrusive memories and sleep in the first week post-trauma, using a simple diary, may help identify in iduals more vulnerable to later psychopathology.
Publisher: Public Library of Science (PLoS)
Date: 30-09-2013
Publisher: Elsevier BV
Date: 10-2015
Publisher: Springer Science and Business Media LLC
Date: 06-03-2014
Publisher: Wiley
Date: 21-08-2010
Publisher: Elsevier BV
Date: 05-2009
DOI: 10.1016/J.BRAT.2009.01.009
Abstract: Information processing theories of post-traumatic stress disorder (PTSD) state that intrusive images emerge due to a lack of integration of perceptual trauma representations in autobiographical memory. To test this hypothesis experimentally, participants were shown an aversive film to elicit intrusive images. After viewing, they received a recognition test for just one part of the film. The test contained neutrally formulated items to rehearse information from the film. Participants reported intrusive images for the film in an intrusion diary during one week after viewing. In line with expectations, the number of intrusive images decreased only for the part of the film for which the recognition test was given. Furthermore, deliberate cued-recall memory after one week was selectively enhanced for the film part that was in the recognition test a week before. The findings provide new evidence supporting information processing models of PTSD and have potential implications for early interventions after trauma.
Publisher: Cambridge University Press (CUP)
Date: 09-2010
Abstract: This article presents a panel discussion on the integration of homework assignments into cognitive behaviour therapy sessions. The panel comprised experts in research and practice who had been invited as keynote presenters for the 32nd National Conference for the Australian Association of Cognitive and Behaviour Therapy. Experts responded to questions about the definition of homework, the mechanism by which homework produces its effects, and the relative importance of homework adherence for effective therapy. Interwoven through the discussion was an emphasis on a collaborative approach to homework, as well as specific recommendations for the integration of homework into sessions. Selected case illustrations were also discussed.
Publisher: Springer Science and Business Media LLC
Date: 09-04-2016
Publisher: Elsevier BV
Date: 2017
Publisher: Psychology Press
Date: 15-02-2013
Publisher: Springer Science and Business Media LLC
Date: 11-07-2014
Publisher: Springer Science and Business Media LLC
Date: 24-07-2013
Publisher: Elsevier BV
Date: 09-2016
Publisher: Informa UK Limited
Date: 26-08-2020
Publisher: Springer New York
Date: 03-12-2012
Publisher: Oxford University Press (OUP)
Date: 11-03-2010
Publisher: Elsevier BV
Date: 06-2015
Publisher: Elsevier BV
Date: 2010
DOI: 10.1016/J.JANXDIS.2009.09.009
Abstract: We tested the hypothesis that intrusive visual images could develop from listening to a traumatic verbal report. Eighty-six participants listened to a traumatic verbal report under one of three conditions: while shaping plasticine (visuospatial condition), while performing articulatory suppression (verbal condition), or with no extra task (control condition). Results showed that intrusive visual images developed from listening to the traumatic report. In line with the idea that central executive processes guide encoding of information, intrusion frequency was reduced in both the visuospatial and the verbal condition compared to the no task control condition. Overall, this pattern is similar to intrusive images from a traumatic film as found in earlier studies. This study provides a valuable addition to models of posttraumatic stress disorder and autobiographical memory. Additionally, the results have potential implications for therapists working with traumatized in iduals.
Publisher: SAGE Publications
Date: 02-02-2011
Abstract: Four studies investigated the effect of imagining intergroup contact on prejudice against people with schizophrenia. Experiments 1 and 2 demonstrated that a neutral imagined contact task can have negative effects, compared to a control condition, even when paired with incidental positive information (Experiment 2). Experiments 3 and 4 demonstrated, however, that an integrated positive imagined contact scenario does result in less intergroup anxiety and more positive attitudes, even toward this challenging group. Analyses of participants’ descriptions of the imagined interactions in and across the first three studies confirm that positive and high quality imagined contact is important for reducing prejudice, but failing to ensure that imagined contact is positive may have deleterious consequences. We emphasize the importance of investigating the quality of the imagined contact experience, and discuss the implications for using imagined contact as a prejudice-reducing intervention.
Publisher: American Psychiatric Association Publishing
Date: 02-2012
Publisher: Elsevier BV
Date: 08-2022
DOI: 10.1016/J.BRAT.2022.104131
Abstract: Social anxiety disorder (SAD) is associated with marked physiological reactivity in social-evaluative situations. However, objective measurement of biomarkers is rarely evaluated in treatment trials, despite potential utility in clarifying disorder-specific physiological correlates. This randomized controlled trial sought to examine the differential impact of imagery-enhanced vs. verbal-based cognitive behavioral group therapy (IE-CBGT, n = 53 VB-CBGT, n = 54) on biomarkers of emotion regulation and arousal during social stress in people with SAD (pre- and post-treatment differences in heart rate variability (HRV) and skin conductance). We acquired psychophysiological data from randomized participants across four social stress test phases (baseline, speech preparation, speech, interaction) at pre-treatment, and 1- and 6-months post-treatment. Analyses revealed that IE-CBGT selectively attenuated heart rate as indexed by increases in median heart rate interval (median-RR) compared to VB-CBGT at post-treatment, whereas one HRV index showed a larger increase in the VB-CBGT condition before but not after controlling for median-RR. Other psychophysiological indices did not differ between conditions. Lower sympathetic arousal in the IE-CBGT condition may have obviated the need for parasympathetic downregulation, whereas the opposite was true for VB-CBGT. These findings provide preliminary insights into the impact of imagery-enhanced and verbally-based psychotherapy for SAD on emotion regulation biomarkers.
Publisher: Center for Open Science
Date: 02-08-2022
Abstract: Distressing intrusive memories of a traumatic event are the hallmark symptom of posttraumatic stress disorder. Thus, it is crucial to identify early interventions that prevent the occurrence of intrusive memories. Both, sleep and sleep deprivation have been discussed as interventions, yet previous studies yielded contradicting effects. Our systematic review aims at evaluating existing evidence by means of traditional and in idual participant data (IPD) meta-analyses to overcome power issues of sleep research. Until May 16th 2022, six databases were searched for experimental analog studies examining the effect of post-trauma sleep versus wakefulness on intrusive memories. Nine studies were included in our traditional meta-analysis (8 in the IPD meta-analysis). Our analysis provided evidence for a small effect favoring sleep over wakefulness, M(log-ROM) = 0.25, p & .001, suggesting that sleep is associated with a lower number of intrusions but unrelated to the likelihood of the occurrence of intrusions. We found no evidence for an effect of sleep on intrusion distress. Heterogeneity was low and certainty of evidence for our primary analysis was moderate. Our findings suggest that post-trauma sleep has the potential to be protective by reducing intrusion frequency. More research is needed to determine the impact following real-world trauma and the potential clinical significance.
No related grants have been discovered for Emily A Holmes.