Abstract: | Three studies examined young children's ability to predict how certain internal and external conditions affect behavior. Study 1 included 136 children from early preschool, late preschool, kindergarten, and second grade. A forced choice procedure revealed that even the youngest group could predict the effect of various internal-personal causes (e.g., interest, intelligence) and external-situational causes (e.g., rewards, adult pressure). Older preschoolers and second graders considered these internal causes more powerful than these external causes. With the same procedure, in Study 2 the 16 preschoolers predicted that both physical characteristics (e.g., strength, energy level) and the internal-personal characteristics of Study 1 affect performance in athletic activities. In addition, they considered the physical causes more important. Study 3 examined more complex types of causal reasoning. Younger preschoolers responded randomly but older preschoolers combined two causes to create a greater effect than one cause and used an external cause to enhance, rather than discount, an internal cause. The discussion focused on the cognitive development underlying developmental differences in the ability to predict behavior on the basis of one or two causes. |