An Investigation Of The Aetiology Of Eating Disorders: Interactions Between Genes And Environmental Risk Factors.
Funder
National Health and Medical Research Council
Funding Amount
$225,000.00
Summary
Eating disorders, along with substance abuse, carry the highest risk of premature death, from both natural and unnatural causes, out of 27 mental disorder categories. Eating disorders, including anorexia nervosa, bulimia nervosa, and binge-eating disorder, affect about 6% of Australian women. Despite increased levels of research into the aetiology of eating disorders over the last 20 years, little knowledge exists as to which risk factors cause women to attempt weight loss to the point of increa ....Eating disorders, along with substance abuse, carry the highest risk of premature death, from both natural and unnatural causes, out of 27 mental disorder categories. Eating disorders, including anorexia nervosa, bulimia nervosa, and binge-eating disorder, affect about 6% of Australian women. Despite increased levels of research into the aetiology of eating disorders over the last 20 years, little knowledge exists as to which risk factors cause women to attempt weight loss to the point of increasing their risk of premature mortality. A review of twin studies in eating disorders concludes that there is increasing evidence to suggest that genetic factors play a role in the development of eating disorders. In addition, a recent series of studies, examining risk factors before the age of eating disorder onset, have found the following events to specifically predict the development of an eating disorder as opposed to another psychiatric condition: negative self-evaluation, parental alcoholism, low parental contact and high parental expectations, critical comments about weight, shape or eating during childhood, and childhood obesity. To date, no studies have attempted to integrate the findings from twin studies with the findings from early risk factor studies. Specifically, the ways in which genes interact with the environment to increase the chances of genetic vulnerability to an eating disorder being expressed have not been examined. The proposed project seeks to investigate precisely these interactions between genes and the environment, by examining a large number of female twins, aged 29-37. An enhanced understanding of how genes interact with the environment to either increase the chances that a woman will develop an eating disorder, or alternatively to protect a woman from developing an eating disorder, will benefit our understanding of how to target prevention and treatment strategies.Read moreRead less
Genetic And Environmental Determinants Of Tobacco And Alcohol Use Trajectories Into Adulthood:a Prospective Twin Study.
Funder
National Health and Medical Research Council
Funding Amount
$172,875.00
Summary
Problems associated with the long-term use of tobacco and the abuse of alcohol permeate society. The development of effective programs for both the prevention and cessation of tobacco use and alcohol abuse requires an understanding of the natural history of the use of these substances. Most studies of the natural history of tobacco and alcohol use have followed individuals through secondary school and into the early 20s. These studies tell us about the psychosocial influences on these behaviours ....Problems associated with the long-term use of tobacco and the abuse of alcohol permeate society. The development of effective programs for both the prevention and cessation of tobacco use and alcohol abuse requires an understanding of the natural history of the use of these substances. Most studies of the natural history of tobacco and alcohol use have followed individuals through secondary school and into the early 20s. These studies tell us about the psychosocial influences on these behaviours but not about the role of genes on initiation and escalation of substance use. Yet recent advances in the neurophysiology of nicotine and alcohol receptivity and molecular genetics research suggest that genes play at least some role in determining the use of alcohol and tobacco. This proposal is for funding to continue a study designed to investigate the natural histories of alcohol and tobacco use among a sample of 1400 young Australian twins from adolescence to adulthood (early 30s). The study involves a telephone survey of these twins about their smoking and drinking behaviours, and among other things, their attitudes about smoking and drinking, the use of tobacco and alcohol by family and friends and presence of smoking bans at home and work. Because this study explicitly examines the influence of social and psychological factors on tobacco and alcohol use we will be able to determine the relative contribution of genes and psychosocial factors in tobacco and alcohol use. The proposed study is unique in its use of twins, its longitudinal design and its integration of genetics into psychosocial models of behaviour. The results of this study will help to clarify the role of genes in the development of tobacco use and alcohol abuse. Importantly the results of this study will help to identify those social and psychological factors that increase the likelihood of a genetically susceptible individual becoming dependent on nicotine and-or abusing alcohol.Read moreRead less
Alcohol, Angry Rumination, And Aggression: The Role Of Acute Impairment Of Executive Functioning
Funder
National Health and Medical Research Council
Funding Amount
$341,780.00
Summary
In Australia, alcohol-induced aggression imposes substantial psychological, public health, social, and economic burdens on victims, perpetrators, and society. When people drink and brood over interpersonal transgresssions, they are at increased risk of violence, even toward the innocent. The goal of the proposed research is to identify neuropsychological mechanisms that account for this increased aggression.
Enhancing Treatment Effectiveness For Psychosocial Disorders After Severe Traumatic Brain Injury
Funder
National Health and Medical Research Council
Funding Amount
$253,750.00
Summary
Motor vehicle accidents are a major cause of severe traumatic brain injury (TBI) leading to lifelong, crippling disability. In NSW alone, there are approximately 770 new cases of severe brain injury each year. These people require extensive inpatient rehabilitation and many go on to rely upon community resources for the rest of their lives. The social and economic cost of such injury is cumulative. TBI is mainly experienced by young adults (18-24 years of age) who have normal life expectancy and ....Motor vehicle accidents are a major cause of severe traumatic brain injury (TBI) leading to lifelong, crippling disability. In NSW alone, there are approximately 770 new cases of severe brain injury each year. These people require extensive inpatient rehabilitation and many go on to rely upon community resources for the rest of their lives. The social and economic cost of such injury is cumulative. TBI is mainly experienced by young adults (18-24 years of age) who have normal life expectancy and each year more casualties are added to this social burden. Adults with TBI frequently experience a reduction in social skills. Loss of social skills presents major obstacles to reintegration into the community by making the sufferer more taxing and less rewarding to interact with socially. This loss of social skills limits their ability to maintain pre-injury relationships, and often creates an off-putting first impression on potential new acquaintances that interferes with their ability to establish new relationships. The following project is designed to develop and evaluate a treatment program to enhance the TBI individual's ability to create a good first impression on meeting new acquaintances - e.g., potential employers, work colleagues, customers, and social acquaintances - and to engage in behaviour that is mutually rewarding. The project will inform current theoretical approaches to remediation, providing an examination of the modifiability of social skills deficits that are the result of underlying cognitive impairments. It will provide a systematic, integrated social skills treatment approach for both individuals and groups where there are currently very few. The identification and refinement of successful treatment techniques will increase the efficiency of brain injury rehabilitation in Australia, improve the quality of life for sufferers of TBI and their families, reduce cost of rehabilitation and reduce reliance upon community resources in the long term.Read moreRead less
The Development, Assessment And Treatment Of Early Indicators Of Psychopathy In Children
Funder
National Health and Medical Research Council
Funding Amount
$271,130.00
Summary
2.7 Significance - Lay description Conduct problems and antisocial behaviour cost Australian society millions of dollars every year directly through the mental health and criminal justice systems, indirectly through their association with substance abuse and other mental health problems, and associated disruptions to health, relationships, and personal and occupational functioning. Remediation is not effective once a chronic pattern has been established. Recently, research has shown that early s ....2.7 Significance - Lay description Conduct problems and antisocial behaviour cost Australian society millions of dollars every year directly through the mental health and criminal justice systems, indirectly through their association with substance abuse and other mental health problems, and associated disruptions to health, relationships, and personal and occupational functioning. Remediation is not effective once a chronic pattern has been established. Recently, research has shown that early signs of psychopathy in children predict chronic antisocial behaviour and lack of responsiveness to traditional treatments. The current research uses a combination of experimental, longitudinal, and treatment outcome studies to examine: the effectiveness with which early signs of a callous-unemotional temperamental style, hypothesised to be an early indicator of psychopathy, can be measured in children, causal factors and correlates of callous-unemotional traits, whether such traits pose a risk for chronic antisocial behaviour, the effects of callous-unemotional traits on responsiveness to traditional family-school based treatments, and the effectiveness of an innovative method for treating it in the early years. The project leads directly to a range of clinical assessment and treatment strategies for children at risk for chronic antisocial behaviour. The project has the potential to substantially improve the effectiveness of current treatment approaches to conduct problems in children that focus on family and school management.Read moreRead less