John's performance on certain tasks is better when his friends are watching than when he is alone. According to Zajonc's theory, this occurs because the presence of others __________.

Question

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The presence of others can increase the performer's drive or arousal level, which can lead to improved performance on certain tasks. Zajonc's theory of social facilitation suggests that the presence of others increases the performer's level of arousal, which in turn can enhance or impair task performance depending on the complexity of the task. In John's case, the presence of his friends may be increasing his arousal level and improving his performance.

John's Performance on Certain Tasks Is Better When His Friends