Background: Little is known about changes in the prevalence of psychiatric disorders between childhood and adolescence, and adolescence and adulthood. Methods: We reviewed papers reporting prevalence rates of psychiatric disorders separately for childhood, adolescence, and early adulthood. Both longitudinal and cross-sectional papers published in…

Background: The differentiation hypothesis posits that the underlying liability distribution for psychopathology is of low dimensionality in young children, inflating diagnostic comorbidity rates, but increases in dimensionality with age as latent syndromes become less correlated. This hypothesis has not been adequately tested with longitudinal…

Objective: To examine potential differences in psychiatric symptoms between parent-bereaved youth (N = 172), youth who experienced the death of another relative (N = 815), and nonbereaved youth (N = 235), aged 11 to 21 years, above and beyond antecedent environmental and individual risk factors. Method: Sociodemographics, family composition, and…

Background: Few longitudinal studies of child and adolescent psychopathology have examined the links between specific childhood anxiety disorders and adolescent psychiatric disorder. In this paper we test the predictive specificity of separation anxiety disorder (SAD), overanxious disorder (OAD), generalized anxiety disorder (GAD), and social…