As they learn to navigate the social world, children construct frameworks to interpret others' behavior. The present studies examined two such frameworks: a mentalistic framework, which construes behavior as driven by internal mental states; and a normative framework, which presumes people act in accordance with social norms. Participants included 101 children (ages 4, 7, and 10; 81% White; 41% female) and 35 adults (66% female) tested in the northeastern United States from 2019 to 2021. Children and adults utilized both mentalistic and normative frameworks to explain others' behaviors. Framework use depended on features of the behavior being explained. Minimal developmental differences were observed. The relative independence and the utility of the mentalistic and normative frameworks for naïve reasoning about behavior are considered.