Female reproductive ageing persists despite high infanticide risk in chacma baboons and geladas.

Across mammals, fertility and offspring survival are often lowest at the beginning and end of females' reproductive careers. However, extrinsic drivers of reproductive success-including infanticide by males-could stochastically obscure these expected age-related trends. Here, we modelled reproductive ageing trajectories in two cercopithecine primates that experience high rates of male infanticide: the chacma baboon () and the gelada ().

Targeted Sleep Enhancement Reduces Residual Anxiety Symptoms in Peri-Adolescents Previously Treated for Anxiety Disorders.

Sleep-related problems (SRPs) are a common precursor to anxiety disorders, especially during peri-adolescence, and may be a predictor of treatment response. However, evidence-based anxiety treatments do not alleviate SRPs to a clinically significant degree. The current study examines whether improving sleep in a sample of young adolescents previously treated for anxiety disorders can further reduce anxiety severity.

Real-World Social Reward Processes are Linked to Momentary Positive Affect in Adolescent Girls.

Positive peer interactions are critical for adolescent development and well-being. Showing little interest in interacting socially with peers and/or extracting little reward from positive peer interactions can be markers of social anhedonia, which impacts many youths, especially girls, with social anxiety and depressive disorders. Reduced interest or reward in peer interactions may contribute to social anxiety and depression in girls through effects on positive affect (PA), though associations between social anhedonia and momentary PA have yet to be tested.