American teenagers are chronically sleep deprived. As children enter puberty, physiological changes delay the onset of sleep and make it more difficult to wake up early in the morning. By the end of middle school, there is a large disconnect between biological sleep patterns and early-morning school schedules: one study found that students lose as…

Experiencing an early pubertal transition has been shown to increase the risk for internalizing and externalizing outcomes among girls. It is less clear how the expectations of other individuals can be critical determinants of vulnerability for early developers. This study used an experimental design to examine whether the expectations of teachers…

This study examined the effects of pubertal status, pubertal timing (actual and perceived), and youth biological sex on symptom dimensions of anxiety (i.e., social, separation, harm avoidance, physical) in African Americans (n = 252; ages 8-12). For girls, results indicated that pubertal status and timing (actual) exerted similar effects for some…