독립적인 두 탐색과제 간 시각적 유사성 결여가 초래한 표적 출현확률 효과의 전이 실패 현상

초록

The probability of target presence in visual search influences search efficiency by changing the criteria for response-decision making, and this has been known as target prevalence effect (TPE). Our previous study observed that the TPE in one search task with varying target prevalence was transferred to the performance of the other concurrent search task. Specifically, the study found a transfer of the TPE when the search items were visually identical between the search tasks but differed in their target prevalence, but found no such transfer when they were visually dissimilar. The study accordingly pinpointed to a lack of visual similarity between the search tasks for the absence of the TPE. Nevertheless, the search tasks did not only differ visually, but also differed in the way each search task was defined. The present study examined whether the TPE can be transferred across two search tasks where search-relevant features of the search items were exactly identical to each other but their search-irrelevant features were visually dissimilar. The results showed no indication of a transfer of the TPE, suggesting that the TPE can only be transferable across the search tasks where their search items are visually and specifically similar to each other.

키워드