Davelaar Eddy J
Birkbeck, University of London.
Top Cogn Sci. 2015 Jul;7(3):494-512. doi: 10.1111/tops.12146. Epub 2015 May 15.
Searching through semantic memory may involve the use of several retrieval cues. In a verbal fluency task, the set of available cues is limited and every candidate word is a target. Individuals exhibit clustering behavior as predicted by optimal foraging theory. In another semantic search task, the remote associates task (RAT), three cues are presented and a single target word has to be found. Whereas the task has been widely studied as a task of creativity or insight problem solving, in this article, the RAT is treated as a semantic retrieval task and assessed from the perspective of information foraging theory. Experiments are presented that address the superadditive combination of cues and the anti-clustering behavior in the recall sequence. A new type of search behavior in the RAT is put forward that involves maximizing the difference in activation between target and distractors. This type of search is advantageous when the target is weak and cue patches are contaminated with strong competitors.
在语义记忆中进行搜索可能涉及使用多种检索线索。在言语流畅性任务中,可用线索集是有限的,每个候选词都是一个目标。个体表现出最优觅食理论所预测的聚类行为。在另一项语义搜索任务——远程联想任务(RAT)中,会呈现三个线索,必须找到一个单一的目标词。尽管该任务作为一项创造力或顿悟问题解决任务已得到广泛研究,但在本文中,RAT被视为一项语义检索任务,并从信息觅食理论的角度进行评估。文中呈现了一些实验,这些实验探讨了线索的超加性组合以及回忆序列中的反聚类行为。提出了一种RAT中的新型搜索行为,即最大化目标与干扰项之间的激活差异。当目标较弱且线索区域被强竞争者污染时,这种搜索类型具有优势。