CAS Key Laboratory of Behavioural Science, Institute of Psychology, Beijing, China.
Department of Psychology, College of Education Science, Tianjin Normal University, Tianjin, China.
Sci Rep. 2017 Sep 20;7(1):11946. doi: 10.1038/s41598-017-12177-x.
Collaborative inhibition refers to when people working together remember less than their predicted potential. The most common explanation for this effect is the retrieval-disruption hypothesis during collaborative recall. However, several recent studies have obtained conflicting results concerning this hypothesis. In the current study, item similarity was manipulated in Experiment 1 by requiring participants to study overlapping or non-overlapping unrelated wordlists. The unstructured instructions were then manipulated during a turn-taking recall task between conditions. The results showed that collaborative inhibition occurred for both overlapping and non-overlapping conditions. Subsequently, response competition during collaborative recall, in addition to item similarity, was manipulated in Experiment 2, and the results showed that when collaborative group members were instructed to recall in turn and monitor their partner's recall (the medium- and high-response-competition conditions), collaborative inhibition occurred. However, no such effect was shown when collaborative group members were instructed not to communicate with each other, but to simply recall in turn while in a group (low-response-competition condition). Together, these results suggest that the conflicts between the findings of the aforementioned studies were probably caused by differing instructions, which induced response competition in collaborative settings. Aside from retrieval-disruption, other possible mechanisms underlying collaborative inhibition were also discussed.
协同抑制是指当人们一起工作时，他们的记忆量会少于预期。对于这种现象，最常见的解释是在协同回忆中存在检索干扰假说。然而，最近的几项研究对这一假说得出了相互矛盾的结果。在本研究中，实验 1 通过要求参与者学习重叠或不重叠的无关联单词表来操纵项目相似性。然后，在条件之间的轮流回忆任务中操纵无结构指令。结果表明，重叠和不重叠条件都出现了协同抑制。随后，在实验 2 中操纵了协同回忆过程中的反应竞争，除了项目相似性之外，结果表明，当协作小组成员被指示轮流回忆并监控其伙伴的回忆（中高反应竞争条件）时，出现了协同抑制。但是，当协作小组成员被指示不要相互交流，而是在小组中轮流回忆（低反应竞争条件）时，没有出现这种效果。总之，这些结果表明，上述研究结果之间的冲突可能是由于不同的指令引起的，这些指令在协作环境中引发了反应竞争。除了检索干扰之外，还讨论了协同抑制的其他可能机制。
