Indirect aggression has been associated with antisocial personality traits like Machiavellianism, but there is a lack of evidence on their longitudinal development across adolescence. Therefore, the joint developmental trajectories of adolescent indirect aggression and Machiavellianism across 3 years of high school (Grades 10 to 12) were…

Deception is a common phenomenon in everyday life, yet some people generally lie more than others and some people consider lying more acceptable than others do. Current knowledge about lie acceptability across development or about the individual differences in emotion or personality which shape it is still in an incipient stage. We aimed to expand…

Individual differences in temperament can be protective or risk factors that may enhance or interfere with children's healthy development and educational success. This study examined the concurrent and predictive relationships between temperament, school adjustment, and academic achievement in children at-risk. Seventy-seven children at-risk, ages…