Decades of social psychology research has established the importance of similarity in leading to attraction. However, in response to early social psychology experiments demonstrating the similarity effect, Rosenbaum proposed the repulsion hypothesis, arguing that similarity does not lead to liking, but rather, dissimilarity leads to repulsion. Research to address whether dissimilarity carries more weight than similarity has generally involved participants’ reactions to sterile information about a bogus other whom they never meet. In contrast, in this study (N = 150), individuals first greeted another participant over Skype before they received manipulated (bogus) information on similarity or dissimilarity. In support of the similarity-attraction hypothesis, the two-step experimental design indicated that the participants in the similarity condition experienced an increase in liking and other positive reactions from before to after the receipt of the bogus similarity information. Participants in the dissimilarity condition, however, experienced no change (i.e., no repulsion effect).

中文翻译：

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有关新熟人的（Dis）相似性信息是否会导致喜欢或排斥？经典社会心理学问题的实验检验

数十年来的社会心理学研究已经确立了相似性在吸引人方面的重要性。然而，为了回应证明相似性效应的早期社会心理学实验，Rosenbaum提出了排斥假设，认为相似性不会导致喜欢，而是差异会导致排斥。解决差异是否比相似更重要的研究通常涉及参与者对关于他们从未遇到过的其他伪造信息的不育信息的反应。相比之下，在这项研究中（N = 150），个人在接收到关于相似性或不相似性的（虚假）信息之前，先在Skype上与另一位参与者打招呼。为了支持相似性吸引假说，两步实验设计表明，在接收到虚假相似性信息之前到之后，相似性条件下的参与者经历了喜欢和其他积极反应的增加。但是，相异状态的参与者没有任何变化（即没有排斥作用）。