Department of Psychology, Montana State University, Bozeman, USA.
Memory. 2011 Jul;19(5):417-28. doi: 10.1080/09658211.2011.583928. Epub 2011 Jun 30.
Two experiments examined collaborative memory for information that was studied by all group members (shared items) and information that was studied by only a subset of group members (unshared items). In both experiments significant collaborative inhibition (reduced output of the collaborative groups relative to the pooled output of individuals) was obtained for both shared and unshared information. In Experiment 1 the magnitude of collaborative inhibition was larger for unshared items than for shared items, possibly because unshared items were less likely to be acknowledged and thus incorporated into the groups' recall. In Experiment 2 the magnitude of collaborative inhibition for shared and unshared information was equivalent once all participants were provided with the category name associated with the shared and unshared items. The results of the experiments are discussed in relation to the retrieval strategy disruption hypothesis of collaborative inhibition and the role of social process variables, such as acknowledgement, in influencing collaborative inhibition across situations involving memory of shared and unshared information.
两个实验考察了对所有小组成员（共享项目）学习的信息和仅由小组成员子集（非共享项目）学习的信息的协作记忆。在这两个实验中，对于共享和非共享信息，都获得了显著的协作抑制（协作组的输出相对于个体的汇总输出减少）。在实验 1 中，非共享项目的协作抑制程度大于共享项目，这可能是因为非共享项目不太可能被承认，因此没有被纳入小组的回忆中。在实验 2 中，一旦所有参与者都提供了与共享和非共享项目相关的类别名称，共享和非共享信息的协作抑制程度就相当了。实验结果与协作抑制的检索策略干扰假说以及社会过程变量（如承认）在影响涉及共享和非共享信息记忆的各种情况下的协作抑制的作用有关。
