Abstract
Four experiments (n = 105, 189, 26, 10, respectively) were carried out which permitted an investigation into the reliability of a previously reported increase in task-unrelated imagery and thought likelihood when experimenter and subject are opposite sexes [1]. All experiments found more task-unrelated images and thoughts when the experimenter and subject were of the opposite sex than when they were of the same sex. However, only one experiment found a significant relationship. The consistency of the outcomes of the four experiments along with the original significant finding of Algom and Singer led to the conclusion that interpersonal interaction of subject and experimenter of the opposite sex is a sufficiently salient event to influence task-unrelated imagery and thought during a vigilance task.
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