Co-occurring social-emotional problems are associated with increased risk of aggression and substance use. However, few studies examine their configurational patterns. This study identifies patterns of co-occurring social skills, anxiety, learning, and conduct problems among 2,632 urban boys at entry into sixth grade, and their related aggression…

The smartphone has many attractive attributes and characteristics that could make it highly addictive, particularly in adolescents. The purpose of this study was to examine the prevalence of young adolescents in risk of smartphone addiction and the psychological factors associated with smartphone addiction. Four hundred ninety middle school…