기억항목들 간의 유사성이 시각작업기억 수행에 미치는 영향

초록

The present study examined the effect of inter-items similarity on visual working memory (VWM) performance. A change detection task was used for testing memory performance, and the memory items consisted of two (in Experiment 1) or three (in Experiment 2) sequentially-displayed pairs of items, varying the level of similarity between the items in each pair. After the memory item, memory test was given according to either a whole or partial-report procedure. The two items in each first and second pair were manipulated to have colors from two different color categories or those from the same categories but made distinctive. The former manipulation was for lower inter-item similarity whereas the latter was for higher inter-item similarity. The results showed that change detection was accurate if the inter-item similarity of memory items was lower rather than higher, especially in the partial-probe condition. These results suggest that VWM performance can be improved if the similarity among the items in visual working memory is lower.

키워드