Advances in maturity explain a decline in psychopathic traits from adolescence to young adulthood

What is it about?

Psychopathy is often thought of as a stable personality condition characterized by traits such as callousness, manipulation, impulsivity, and a lack of remorse. Although these characteristics are commonly associated with persistent antisocial behavior, many traits used to assess psychopathy in adults also resemble behaviors that are relatively common during adolescence. For example, teenagers are often more impulsive, irresponsible, and focused on immediate rewards, partly because the capacities needed to regulate emotions, consider long-term consequences, and make mature decisions are still developing. This overlap raises an important question: Could some of the psychopathic traits observed in adolescents reflect developmental immaturity rather than enduring personality characteristics? And if so, might improvements in maturity help explain why psychopathic traits often decline as young people transition into adulthood? To investigate these questions, we examined data from 1,170 boys involved in the juvenile justice system who were followed over seven years, beginning between ages 14 and 17. We assessed how their psychopathic traits changed alongside their maturity of judgment, which encompasses abilities such as controlling impulses, considering others' perspectives, thinking about the future, and making responsible decisions. We found that psychopathic traits generally decreased as maturity increased from adolescence into young adulthood. More importantly, differences in how individuals matured over time helped explain the relationship between psychopathic traits measured during adolescence and those measured seven years later. Although adolescents with higher psychopathy scores initially tended to have higher scores in adulthood, this relationship was no longer statistically significant once we accounted for their development of maturity over time. Interestingly, even adolescents who initially scored highest on psychopathy demonstrated substantial improvements in maturity. Among these youth, those whose psychopathic traits were no longer elevated in adulthood showed nearly twice as much improvement in maturity as those whose traits remained elevated. Together, these findings suggest that the long-term significance of psychopathic traits observed in adolescence may depend partly on how young people mature. Rather than necessarily reflecting fixed personality characteristics, elevated psychopathy scores during adolescence may, in part, capture developmental processes that are still unfolding.

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Photo by Imagine Buddy on Unsplash

Photo by Imagine Buddy on Unsplash

Why is it important?

Psychopathy assessments are sometimes used in juvenile justice settings to inform consequential decisions, including sentencing, treatment opportunities, and evaluations of future risk. Yet labeling an adolescent as psychopathic can imply that their personality characteristics are fixed and unlikely to change. Our findings challenge this assumption by highlighting the importance of normal developmental processes in understanding psychopathic traits during adolescence. Behaviors that resemble psychopathy in a teenager may not necessarily reflect enduring characteristics, particularly when capacities for self-control, responsibility, and consideration of others are still developing. This research underscores the need for caution when interpreting juvenile psychopathy assessments, especially when they are used to make decisions that could affect a young person's future. It also highlights adolescence as an important window of opportunity for interventions that support healthy maturational development.

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