This paper was intended as an investigation of motivational effects on children's social behavior. In study 1,5th and 6th graders answered questions about emotions, behaviors, and reasoning for behaviors in social situations. In study 2,5th and 6th graders chose own emotion, goal, and behavior from items, based on analysis of study 1 data, in three hypothetical situations (entry, isolated, and accidental harm situation). In addition, subjects completed the behavior-expectation task of characters, in which subjects were required to expect behaviors of characters with two different motivational states in each situation. Results indicated that emotion and goal effected on the selection of social behavior. Finally, implications for clinical intervention and limitations of present study were also discussed.