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Associate Professor Dixie Statham

Associate Professor, Clinical Psychology

Institute Leadership

Section/Portfolio:

Institute Leadership

Location:

Mt Helen Campus, Online

Cohort profile: the Australian genetics of depression study

Purpose Depression is the most common psychiatric disorder and the largest contributor to global...

Genetic aetiology of self-harm ideation and behaviour

Family studies have identified a heritable component to self-harm that is partially independent...

High-Intensity Drinking in Adult Australian Twins

Background: Many adult drinkers consume far beyond the binge threshold. This “high-intensity...

Associations between polygenic risk for tobacco and alcohol use and liability to tobacco and alcohol use, and psychiatric disorders in an independent sample of 13,999 Australian adults

Background: Substance use, substance use disorders (SUDs), and psychiatric disorders commonly...

Big Five Personality Traits and Alcohol, Nicotine, Cannabis, and Gambling Disorder Comorbidity

The Diagnostic and Statistical Manual of Mental Disorders (DSM; 5th ed.) reassignment of gambling...

Common genetic contributions to high-risk trauma exposure and self-injurious thoughts and behaviors

Background Prior research has documented shared heritable contributions to non-suicidal...

Potential Causal Influence of Neighborhood Disadvantage on Disordered Gambling: Evidence From a Multilevel Discordant Twin Design

The quality of the neighborhood in which one lives has been linked to disordered gambling (DG),...

A multivariate behavior genetic investigation of dual-systems models of alcohol involvement

Objective: Dual-systems models hypothesize that individuals who tend to be drawn to risky...

Anger rumination, binge eating, and at-risk alcohol use in a university sample

Objective: Binge eating and alcohol consumption have been associated with attempts to reduce...

Depression, Anxiety, and Acculturative Stress Among Resettled Bhutanese Refugees in Australia

Despite awareness of the difficulties faced by refugees in flight, little is known about their...

Overlap of heritable influences between cannabis use disorder, frequency of use and opportunity to use cannabis: Trivariate twin modelling and implications for genetic design

Background The genetic component of Cannabis Use Disorder may overlap with influences acting more...

Cannabis and Depression: A Twin Model Approach to Co-morbidity

Cannabis use disorder (CUD) co-occurs with major depressive disorder (MDD) more frequently than...

Consumer and carer perspectives in the development of a mental health research, treatment and teaching facility: A thematic analysis

What is known on the subject?: Around the world, recovery has become a focus in mental health...

Correlates of employment interest among adults with schizophrenia

Background/Aims: Role functioning is an important part of recovery and psychiatric rehabilitation...

Lonely people tend to make fun of themselves: A behavior genetic analysis of humor styles and loneliness

The present study examined the phenotypic, genetic, and environmental correlations between four...

Major depressive disorder, suicidal thoughts and behaviours, and cannabis involvement in discordant twins: a retrospective cohort study

Background Early and frequent cannabis use are associated with an increased likelihood of major...

Sensation seeking and impulsive traits as personality endophenotypes for antisocial behavior: Evidence from two independent samples

Sensation seeking and impulsivity are personality traits that are correlated with risk for...

The Association of Genetic Predisposition to Depressive Symptoms with Non-suicidal and Suicidal Self-Injuries

Non-suicidal and suicidal self-injury are very destructive, yet surprisingly common behaviours....

The Mini Alcohol Craving Experience Questionnaire: Development and Clinical Application

Background: Standardized alcohol craving scales are rarely used outside of research environments...

Age at first use and later substance use disorder: Shared genetic and environmental pathways for nicotine, alcohol, and cannabis

Behavioral genetic studies have provided insights into why early substance use initiation is...

Cannabis involvement and nonsuicidal self-injury: A discordant twin approach

Objective: Cannabis use, particularly at an early age, has been linked to suicidal thoughts and...

Most of the genetic covariation between major depressive and alcohol use disorders is explained by trait measures of negative emotionality and behavioral control

Background Mental health disorders commonly co-occur, even between conceptually distinct...

Onset of opportunity to use cannabis and progression from opportunity to dependence: Are influences consistent across transitions?

ackground: There is a developing body of research looking at cannabis use opportunity, but little...

The association between childhood maltreatment, psychopathology, and adult sexual victimization in men and women: Results from three independent samples

Background Childhood maltreatment (CM) has consistently been linked with adverse outcomes...

The variance shared across forms of childhood trauma is strongly associated with liability for psychiatric and substance use disorders

Introduction: Forms of childhood trauma tend to co-occur and are associated with increased risk...

Early Onset Alcohol Use and Self-Harm: A Discordant Twin Analysis

Background: Self-harm has considerable societal and economic costs and has been extensively...

Interest in employment among people with schizophrenia

There are divergent findings about the level of employment interest among community residents...

Local area disadvantage and gambling involvement and disorder: Evidence for gene-environment correlation and interaction

Previous research has demonstrated that local area characteristics (such as disadvantage and...

Role functioning among adults with schizophrenia

Introduction: The extent that adults with schizophrenia and schizoaffective disorders participate...

Telescoping and gender differences in the time course of disordered gambling: Evidence from a general population sample

Background and Aim: The course of disordered gambling in women has been described as 'telescoped'...

The association between speed of transition from initiation to subsequent use of cannabis and later problematic cannabis use, abuse and dependence

Aims: To test whether speed of transition from initiation use to subsequent use of cannabis is...

The relationship between cannabis involvement and suicidal thoughts and behaviors

Background: In the present study, we examined the relationship between cannabis involvement and...

The role of conduct disorder in the relationship between alcohol, nicotine and cannabis use disorders

Genetic influences contribute significantly to co-morbidity between conduct disorder and...

Genetic influences on alcohol-related hangover

Genetic variation in personality traits explains genetic overlap between borderline personality features and substance use disorders

Aims: To examine the genetic overlap between borderline personality features (BPF) and substance...

Mental health interprofessional education for health professions students: Bridging the gaps

Purpose: Government-run mental health services in Australia run predominantly on a...

Overlapping genetic and environmental influences on nonsuicidal self-injury and suicidal ideation: Different outcomes, same etiology?

IMPORTANCE Nonsuicidal self-injury (NSSI) and suicidal self-injury are very harmful behaviors and...

Parental separation and early substance involvement: Results from children of alcoholic and cannabis dependent twins

Background: Risks associated with parental separation have received limited attention in research...

Test of a potential causal influence of earlier age of gambling initiation on gambling involvement and disorder: A multilevel discordant twin design

The premise that an association between an earlier age of gambling initiation and the later...

The Craving Experience Questionnaire: A brief, theory-based measure of consummatory desire and craving

Background and Aims: Research into craving is hampered by lack of theoretical specification and a...

Measurement of alcohol craving

Despite considerable research activity and application in treatment, the construct of craving...

Common heritable contributions to low-risk trauma, high-risk trauma, posttraumatic stress disorder, and major depression

Context: Understanding the relative contributions of genetic and environmental factors to trauma...

Genome-wide association study of major depressive disorder: New results, meta-analysis, and lessons learned

Major depressive disorder (MDD) is a common complex disorder with a partly genetic etiology. We...

Measuring alcohol craving: Development of the Alcohol Craving Experience questionnaire

Aims To develop a measure of craving based on the Elaborated Intrusion (EI) theory of desire and...

Parental depression and offspring psychopathology: A Children of Twins study

Background Associations between parental depression and offspring affective and disruptive...

Common genetic contributions to alcohol and cannabis use and dependence symptomatology

Background: Despite mounting evidence that use of and dependence on alcohol and cannabis are...

Accurate, Large-Scale Genotyping of 5HTTLPR and Flanking Single Nucleotide Polymorphisms in an Association Study of Depression, Anxiety, and Personality Measures

Background: The length polymorphism repeat in the promoter region of the serotonin transporter...

Genetic linkage findings for DSM-IV nicotine withdrawal in two populations

Nicotine withdrawal (NW) is both an important contributor to difficulty quitting cigarettes and...

Suggestive linkage on chromosome 2, 8, and 17 for lifetime major depression

It is well established that major depressive disorder (MDD) is partly heritable. We present a...

The Australian twin study of gambling (OZ-GAM): Rationale, sample description, predictors of participation, and a first look at sources of individual differences in gambling involvement

Two major challenges to conducting a community-based twin study of pathological gambling (PG)...

An autosomal linkage scan for cannabis use disorders in the nicotine addiction genetics project

Context: Despite accumulating evidence that there is a genetic basis for cannabis use disorders...

Autosomal linkage analysis for cannabis use behaviors in Australian adults

Cannabis is the most commonly used illicit drug in developed and in developing nations. Twin...

A behavior genetic investigation of adolescent motherhood and offspring mental health problems

The present study examines the relations between adolescent motherhood and children's behavior,...

Spousal concordance for alcohol dependence: Evidence for assortative mating or spousal interaction effects?

Background: Alcohol dependence (AD) is among the most common psychiatric disorders, and impacts...

Stimulant use and symptoms of abuse/dependence: Epidemiology and associations with cannabis use-A twin study

Background: This paper explores the magnitude of - and extent of overlap between - additive...

Assortative mating for cigarette smoking and for alcohol consumption in female Australian twins and their spouses

Background: Non-random mating affects population variation for substance use and dependence....

Childhood sexual abuse and risks for licit and illicit drug-related outcomes: A twin study

Background. This study examined the relationships between self-reported childhood sexual abuse...

Duration of cannabis use - a novel phenotype?

Although cannabis is the most commonly used illicit drug, duration of cannabis use is typically...

Familial clustering of major depression and anxiety disorders in Australian and Dutch twins and siblings

The aim of this study was to investigate familial influences and their dependence on sex for...

Defining nicotine dependence for genetic research: Evidence from Australian twins

Background. Whether current criteria used to define nicotine dependence are informative for...

Genetic effects on alcohol dependence risk: Re-evaluating the importance of psychiatric and other heritable risk factors

Background. Genetic influences have been shown to play a major role in determining the risk of...

Genetic Epidemiology of Alcohol-Induced Blackouts

Background: Alcohol-induced blackouts (ie, periods of anterograde amnesia) have received limited...

Major depressive disorder, suicidal ideation, and suicide attempt in twins discordant for cannabis dependence and early-onset cannabis use

Background: Previous research has reported both a moderate degree of comorbidity between cannabis...

Monozygotic twin pairs discordant for lifetime anorexia nervosa: An exploratory investigation

Background. Many reports have appeared on associations between platelet monoamine oxidase (MAO)...

Escalation of drug use in early-onset cannabis users vs co-twin controls

Context: Previous studies have reported that early initiation of cannabis (marijuana) use is a...

Association between self-reported childhood sexual abuse and adverse psychosocial outcomes: Results from a twin study

Background: Increased risk for serious adverse outcomes has been associated with a history of...

Genetic and environmental contributions to cannabis dependence in a national young adult twin sample

Background. This paper examines genetic and environmental contributions to risk of cannabis...

Personality and the genetic risk for alcohol dependence

The extent to which the genetic risk for alcohol dependence (AD) and conduct disorder (CD) and...

Predictors of non-response to a questionnaire survey of a volunteer twin panel: Findings from the Australian 1989 twin cohort

Questionnaire surveys, while more economical, typically achieve poorer response rates than...

Towards a molecular epidemiology of alcohol dependence: Analysing the interplay of genetic and environmental risk factors

Background: Progress in identifying genetic factors protective against alcohol dependence (AlcD)...

Anxiety and depression in twin and sib pairs extremely discordant and concordant for neuroticism: Prodromus to a linkage study

Multivariate modelling of anxiety and depression data in twins has suggested that the two...

A study of the genetic and environmental etiology of stuttering in a selected twin sample

Stuttering is a developmental disorder of speech production that usually emerges in childhood. In...

Childhood sexual abuse and pathogenic parenting in the childhood recollections of adult twin pairs

Background. We examined the relationship between childhood sexual abuse (CSA), and interviewees'...

Early sexual abuse and lifetime psychopathology: A co-twin-control study

Background. This study was designed to determine lifetime prevalence of psychiatric disorders...

Monoamine oxidase: Associations with alcohol dependence, smoking and other measures of psychopathology

Background. Many reports have appeared on associations between platelet monoamine oxidase (MAO)...

Genetic differences in alcohol sensitivity and the inheritance of alcoholism risk

Background. Substantial evidence exists for an important genetic contribution to alcohol...

Major depressive disorder in a community-based twin sample: Are there different genetic and environmental contributions for men and women?

Background: Depression affects more women than men and often aggregates in families. Using a...

Common genetic risk factors for conduct disorder and alcohol dependence

The association between retrospectively reported childhood conduct disorder (CD) and a history of...

Genetic and environmental contributions to alcohol dependence risk in a national twin sample: Consistency of findings in women and men

Background. Genetic influences on alcoholism risk are well-documented in men, but uncertain in...

Genetic and environmental contributions to variance in age at first sexual intercourse

Little is known about the relative importance of genetic and environmental factors as...

Modeling genetic and environmental influences in the etiology of conduct disorder: A study of 2,682 adult twin pairs

The etiology of conduct disorder (CD) was examined retrospectively in a sample of 2,682 male,...