Tilne anxiety seems to be constructed of twO different emotional components, sense of tirrle urgency and anticipation of receiving undisired outcome in an probability. ′ 「 he purpose of this study was to investigate the effects of tilne pressure and anticipation of receiving white noise on the subjective,behavioral and physiological indices of state anxiety response; STAI, task performance and error,heart rate.SutteCtS Were 80 undergraduates and Time Anxiety Scale was used to measure the degree

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... of time anxiety trait. According to the person¨situation interacition model, we predicted that state anxiety of high tirne anxious group would more increase than of low anxious group during a tirrle pressure condition,but not during an aversive white noise condition. The results did not confirrn our prediction.All subjects showed higer state anxiety in an indices during a tilne pressure condition than during a white noise condition. The group differences of state anxiety could be observed in phasic change,but not in tonic level.