Dating, sex, and substance use predict increases in adolescents' subjective age across two years

This study examined the nature of the relationship between adolescents' subjective age ( how old they feel) and chronological age, and explored whether dating, sex, and substance use predicted increases in adolescents' subjective age across a two-year period. The participants were 570 adolescents who were interviewed when they were first ages 12-19 and again two years later ( ages 14-21). Results were that a quadratic function characterized the relationship between chronological and subjective age: subjective age increased from age 14 to 18.25 years, and then declined. Adolescents who dated, reported having sex, used alcohol, and used drugs at time 1 experienced an increased subjective age, that is, they felt older than less experienced adolescents by time 2. An older subjective age at time 1 did not predict increases in dating, sex, and substance use behaviors, with one exception: smoking. The results are consistent with theories assuming that self-perceptions of maturity may arise from engaging in "adult-like" behaviors.