Investigating Physiology‐Behavior Associations for Youth During Parent–Child Conflict Discussions

= 12.03 (0.92) years; 46.9% female; 42% White and non-Hispanic/Latinx; 40.7% Black; 16.7% multiracial). Dyads completed a conflict discussion during which youths' affective behaviors were observationally coded. Additionally, we measured youths' RSA and subjective affect as well as parents' negative behavior. Youths' angry/defiant behavior was predicted by faster RSA withdrawal, increases in subjective negative affect, and more negative parent behavior, whereas youths' sad/distressed and positive engagement behaviors were predicted solely by subjective negative affect and negative parent behavior, respectively. Findings underscore the importance of taking context into account to understand the physiology-behavior association among youth in developmentally salient interactions, which has implications for enhancing etiological models of psychopathology.