Park B, Ryan C S, Judd C M
University of Colorado, Boulder 80309.
J Pers Soc Psychol. 1992 Oct;63(4):553-67. doi: 10.1037//0022-3514.63.4.553.
Five aspects of the complexity of the knowledge representation of business and engineering majors were examined to see whether these differed by group membership and whether these differences were related to differences in perceived variability. Significantly more subgroups were generated when describing the in-group than the out-group; this difference predicted the relative tendency to see the in-group as more variable, and when controlled for statistically, out-group homogeneity effects were eliminated. Familiarity, redundancy, number of attributes used to describe the group, and the deviance of the subgroups from the larger group generally showed differences for in-group and out-group but did not show consistent evidence of mediation. In a 2nd study, Ss who were asked to sort group members into meaningful subgroups perceived greater variability relative to those who did not perform the sorting task.
研究考察了商业和工程专业学生知识表征复杂性的五个方面，以确定这些方面是否因群体成员身份而异，以及这些差异是否与感知到的变异性差异相关。在描述内群体时产生的子群体数量显著多于外群体；这种差异预示着将内群体视为更具变异性的相对倾向，并且在进行统计控制后，外群体同质性效应被消除。熟悉度、冗余度、用于描述群体的属性数量以及子群体与较大群体的偏差在内群体和外群体之间通常表现出差异，但没有显示出一致的中介证据。在第二项研究中，被要求将群体成员分类为有意义子群体的受试者相对于未执行分类任务的受试者感知到更大的变异性。
