A type A behavior pattern (type A) scale was administered to 189 Japanese students, between the 7th and 9th grades, along with a questionnaire measuring motivation for learning and study time. Factor analysis of the motivation for learning scale found three subscales; internal, career, and external motivation. Correlation coefficients were calculated among the type A scale and the three subscales. While the correlation between type A and internal motivation and career motivation were relatively high in the 7th grade, there were no significant correlation among type A and three subscales in the 8th grade. A significant, moderately high correlation was found between type A and external motivation in 9th grade. As for study time, it was shorter at the 8th than the 7th grade, and recovered at the 9th grade; the pattern was stronger especially for non-type A students. In case of type A students, however, study time remained relatively high at the 8th grade, and then increased at the 9th grade.

Key words: type A behavior pattern, Japanese junior high school students, motivation for learning, study time