1992 年 40 巻 3 号 p. 340-347
The present investigation examined the effects of components and threatening situations on a manifestation of Type Abehavior in children. Two hundred and fifty -Six children (grade3-4) were classified by MYTH's two sub-scale scores into four types composed of high or low competitiveness by high or low impatience-aggresiveness. All subjects were assigned to one of four task situations, labelled as threatening by competition, threatening by time pressure, no threatening of control, or relaxing. Type A behavior was assessed by Stroop Color Word Test performance. Results showed that competitiveness was more related to a manifestation of Type A behavior than impatience-aggressiveness, and that childrens' manifestation of Type A behavior increased in threatening situations more than in non-threatening control or relaxing conditions.