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 ...

We find evidence for the disposition effect for buy strategies, but a reverse disposition effect for sell strategies, besides a dependence of the disposition effect on the investor sophistication. The disposition effect also depends strongly on the time horizon of a trading strategy. We develop a model in which informed traders with a behavioral bias and rational traders interact to generate th...

Economists have long been puzzled by the tendency of investors to sell winning investments too soon and hold losing investments too long. Several behavioral explanations for this phenomenon, known as the disposition effect, have been advanced. This paper demonstrates that disposition effects are not intrinsically at odds with rational behavior. Specifically, we show (i) that disposition effects...

Longitudinal links between perceived racial discrimination and later conduct problems and depressive symptoms were examined among 714 African American adolescents who were 10-12 years old at recruitment. Data were gathered 3 times over a 5-year period. Hypotheses were tested via latent curve modeling and multiple-group latent growth modeling. Increases in perceived discrimination were associate...

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...

In the presence of significant transformations that have occurred in medical education over years, curriculum model can be identified as main and structural change, which has been improving competency-based educational structures processes. The aim this study was to conduct a theoretical discussion on education. methodology used narrative literature review, with qualitative approach, had guide ...

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...

Conduct problems in childhood often co-occur with symptoms of depression. This study explored whether the development of conduct problems becomes indirectly linked to depressive symptoms in a sample of 323 kindergarten children, followed over a period of 2 school years. Results showed that the development of conduct problems was indirectly linked to the development of depressive symptoms via ex...