OBJECTIVE To investigate whether genetic contributions to major depressive disorder and conduct disorder comorbidity are shared with genetic influences on negative emotionality. METHOD Primary caregivers of 2,022 same- and opposite-sex twin pairs 6 to 18 years of age comprised a population-based sample. Participants were randomly selected across five regions in Tennessee, with stratification ...

The present study aimed to investigate serum cortisol, dehydroepiandrosterone (DHEA), and oxytocin levels of children with attention-deficit/hyperactivity disorder (ADHD) combined presentation and those diagnosed with ADHD combined presentation and coexisting conduct disorder. A total of 74 drug-naive children with ADHD combined presentation alone, 32 children with ADHD combined presentation + ...

The present study used a prospective, longitudinal design to investigate genetic and environmental influences on the association between earlier conduct problems and the initiation and progression of marijuana use during adolescence. Parent- and teacher-reported conduct problems assessed at Time 1 (1996) and self-reported marijuana use assessed at Time 2 (2004) were available for 1088 adolescen...

Exposure to community violence through witnessing or being directly victimized has been associated with conduct problems in a range of studies. However, the relationship between community violence exposure (CVE) and conduct problems has never been studied separately in healthy individuals and individuals with conduct disorder (CD). Therefore, it is not clear whether the association between CVE ...

Potential risk factors for conduct problems and depressive symptoms were tested in a cohort of 10- to 12-year-old Ukrainian children (N = 544, 47.6% male). Risk factors examined were child emotional lability, child attention problems, poor mother-child communication, coercive maternal discipline, maternal depression, and low marital satisfaction. Results indicated that poor mother-child communi...

BACKGROUND Negative parenting practices may be an environmental risk factor for subsequent conduct problems. Research on the association between parenting practices and callous-unemotional traits, a risk factor for conduct problems, has produced mixed findings. AIMS To investigate whether negative parental discipline is a non-shared environmental risk factor for the development of conduct pro...

Comorbid conduct problems (CPs) and depression are observed far more often than expected by chance, which is perplexing given minimal symptom overlap. In this study, relations between parental psychopathology and children's diagnostic status were evaluated to test competing theories of comorbidity. Participants included 180 families with an 8-12-year-old child diagnosed with CPs, depression, bo...

OBJECTIVE To provide a synopsis of treatment programs for conduct-disordered children in Canada. METHOD Five groups of authors from British Columbia, Ontario, Quebec, and New Brunswick describe their approaches to the treatment of children with conduct disorder. RESULTS All programs emphasize the needs to use multimodal treatment schemes, including day and short-term residential care, and t...

Anxiety and conduct problems covary, yet studies have not explored the genetic and environmental origins of this association. We analyzed parent-reported anxiety and conduct problems in 6,783 pairs of twins at 2-, 3-, and 4-years of age. As anxiety and conduct problems were fairly stable across the three ages (average 1-year correlation was .53), ratings from all three were combined. The aggreg...

A sample of 6- to 13-year-old clinic-referred (n = 136) and volunteer (n = 30) participants was investigated for a potential interaction between the quality of parenting that a child receives and callous-unemotional traits in the child for predicting conduct problems. Ineffective parenting was associated with conduct problems only in children without significant levels of callous (e.g. lack of ...