Girls who experience childhood trauma are at a higher risk of developing internalizing symptoms like depression and anxiety by ages 12 to 14, an association that is partially explained by starting puberty ahead of their peers, according to a study issued this week in The Journal of Child Psychology and Psychiatry.
Niamh MacSweeney, Ph.D., of the University of Oslo, Norway, and colleagues used data from 4,225 girls enrolled in the Adolescent Brain Cognitive Development Study. Each participant, who enrolled at age nine or 10, was assessed annually over four years, with their parents reporting their exposure to trauma at baseline and their pubertal development at each assessment. When participants were between the ages of 12 and 14, they self-reported their internalizing symptoms.
Participants followed three distinct patterns of pubertal development:
- Typical developers (76% of participants) were in the early stages of puberty when the study began and had the most rapid pace of development over time, such that they were in the later stages by ages 12 to 14.
- Slow developers (15%) were just entering the early stages of puberty by ages 12 to 14.
- Early starters (9%) were already midway through puberty by ages nine to 10 (these participants, however, showed a protracted pace of development and had about the same degree of pubertal maturation on average as typical developers by ages 12 to 14).
Early starters had significantly higher exposure to trauma at baseline compared with slow or typical developers, while slow developers had lower trauma exposure compared with typical developers. Slow developers also had significantly lower internalizing symptoms compared with early starters and typical developers. In examining the trajectories of the girls’ development, the researchers found that greater childhood trauma was linked with greater internalizing symptoms at ages 12 to 14, and this association was mediated by early puberty onset. Among early developers, having a slower pace of puberty development after age nine partially reduced this risk of internalizing symptoms.
“It has been proposed that the association between early pubertal timing and internalizing symptoms is underpinned by an asynchrony between a young person’s physical, cognitive and social development,” the authors wrote. “Additionally, the type of trauma experienced (e.g., threat vs. neglect) and the trajectory of internalizing difficulties across adolescence (e.g., limited to early adolescence, persistent across adolescence, or only emerging in later adolescence) will be crucial to consider in future longitudinal research to better characterize at-risk and resilient youth and inform prevention strategies.”
For related information, see the Psychiatric News article “Group School Intervention Helps Girls Cope With Internalized Trauma.”
(Image: Getty Images/iStock/Yobro10)
Don't miss out! To learn about newly posted articles in Psychiatric News, please sign up here.