We assessed parental reflective functioning (PRF) with the Parent Development Interview-Revised and investigated its association with parenting behaviors, that is, autonomy support and psychological control (operationalized in terms of behaviors promoting and undermining autonomy relatedness), and stress responses (cortisol reactivity) during a parent-child conflict interaction task (Family Interaction Task). Participants were 40 mothers and 28 fathers, who took part in the study together with their adolescent children (N = 49). Mothers had significantly lower PRF and displayed more psychologically controlling behaviors in the interaction with their children than fathers. Rather than sex per se, high levels of PRF were the best predictors of autonomy support, whereas lower levels of PRF predicted more psychological control. Higher levels of PRF were also the best predictor for lower levels of parenting stress. Stress in the context of parenting was neither related to autonomy support nor to psychological control, which were best predicted by divorced family status and, for psychological control only, by parental sex. The findings point to the potential utility of interventions aimed at improving PRF, especially in divorced families, given its protective effect on parenting behaviors and stress in the context of parenting. (PsycInfo Database Record (c) 2023 APA, all rights reserved).