Adolescence is a period of rapid biological and psychosocial changes, which have a salient impact on parent–child relationships. Parents and adolescents have to reorganize responsibilities and move toward a more egalitarian relationship. Although conflicts between parents and children become more frequent and more intense during adolescence, these conflicts are also thought to be a means to negotiate relational changes. The short‐term dyadic processes that occur during conflict interactions are important in the development of parent–adolescent relationships. Parent–adolescent dyads with more emotional variability during conflict interactions tend to adapt effectively and reorganize their relationships in response to the developmental needs of adolescents. Thus, parent–adolescent conflicts are adaptive for relational development when parents and adolescents can switch flexibly between a range of positive and negative emotions.