These findings indicate that the emotional sequelae of puberty extend further than documented in previous research, and suggest that earlier development may place girls on a life path from which it may be difficult to deviate. The American Academy of Pediatrics already provides guidelines for identifying and working with patients with early pubertal timing. Pediatricians and adolescent health care providers should also be attuned to early maturers' elevated mental health risk and sensitive to the potential duration of changes in mental health that begin at puberty.

Objective We examined risk and protective factors for emotional health problems in adolescent girls during the COVID-19 pandemic. We investigated pre- to early-pandemic changes in symptoms of anxiety and depression, documented daily activities and perceived positive and negative impacts of the pandemic, and linked perceived positive and negative impacts of the pandemic to real-time changes in emotional health. Methods The study was a 10-day daily diary study with 93 U.S. adolescent girls (aged 12–17; 68% White non-Hispanic) at temperamental risk for anxiety and depression, conducted in April/May 2020 when all participants were under state-issued stay-at-home orders. Girls provided daily reports of positive and negative affect, depressive and anxious symptoms, activities, and positive and negative impacts resulting from the pandemic. Results Girls reported engaging in many activities that may contribute to well-being. Mixed effects analyses revealed positive impacts associated with improved same-day emotional health such as more time for family and relaxation and reduced pressure from school/activities. Negative impacts associated with poorer same-day emotional health included problems with online schooling, lack of space/privacy, lack of a regular schedule, and family conflict. Conclusion Findings highlight the importance of providing in-person or quality online schooling, resources and space for learning, promoting daily routines, and spending time with teens while reducing family conflict. The pandemic also appears to have offered many girls a respite from the chronic stress of modern teen life, with time to relax and engage in creative and healthy pursuits showing benefits for daily emotional health, which should be considered following the return to normal life.

Early experiences are critically important for female reproductive development. Although a number of early childhood hardships predict earlier physical development in girls, research on specific populations suggests a distinct effect of childhood sexual abuse compared to other adversities. This study leverages the National Longitudinal Study of Adolescent Health (N = 6,273 girls) to test the generalizability of these findings, examining associations of early physical abuse, sexual abuse, and physical neglect with pubertal timing. Child sexual abuse predicted earlier menarche and development of secondary sexual characteristics, whereas other types of maltreatment did not. In addition to replicating results from smaller, more specialized samples, these findings reinforce the value of considering puberty within a broader "life span" continuum of birth to adolescence.

Puberty in girls represents a notable period of vulnerability for different psychological disorders. The research literature has primarily considered external and contextual factors that might explain these rises in symptomatology. In the present study, we investigate relations of pubertal status and timing with individual cognitive, emotional, and behavioral tendencies, commonly identified as transdiagnostic processes, in a sample of N = 228 girls (Mage = 11.75 years). We also test whether these transdiagnostic processes mediate associations of pubertal status and pubertal timing with depressive symptoms. Results support greater endorsement of rumination, co‐rumination, negative urgency, and both anxious and angry rejection sensitivity in girls with more advanced pubertal status, as well as in girls with early pubertal timing. Higher levels of transdiagnostic processes fully mediated associations of pubertal status and timing with depressive symptoms at significant and marginally significant levels, respectively. Although the data are cross‐sectional, these findings offer promising preliminary evidence that transdiagnostic processes represent an important mental health risk in early adolescent girls.

Puberty begins a period of vulnerability for disordered eating that is maintained and amplified through adolescence and early adulthood. In the present study, we test the association between young women's recollections of physical maturation and disordered eating outcomes in early adulthood. Participants comprised N ¼ 421 female undergraduate students at a large, northeastern university in the United States (M age ¼ 19.7 years). Three models assessed the relative contributions of recollected puberty (perceptions of changes and preparedness, and timing of puberty), current contextual (social support, romantic bond, sorority or sport participation), and demographic (race, socioeconomic status, family structure) variables to three eating-disorder outcomes. Recollections of feeling unprepared and disliking the physical changes of puberty predicted eating disorder symptoms more than any other demographic or current contextual factor. Results indicate that how young women experience the pubertal transition is related to eating disorder symptoms many years later.