The hypothesis of positive skew in distributions of response to creative thinking tasks was studied. Data were obtained from examinees' responses to problem-solving tasks in three published studies of creative thinking. Subjects included 23 fifth graders (12 females and 11 males), 29 high school students (10 females and 19 males), and 47 female college students. Significant positive skew was discovered in distributions of response to four out of five ill-defined problem-solving tasks. In each case, skew appeared to be greater for responses to ill-defined tasks than for responses to better-defined tasks that had been solved concurrently. Discussion centers on task difficulty as an explanation for positive skew in distributions of response to creative thinking tasks. One table contains skews of responses. (Author/SLD)