Top-down instructions influence the attentional weight on color and shape dimensions during bidimensional search.

ABSTRACT: Efficient searches are guided by target-distractor distinctiveness: the greater the distinctiveness, the faster the search. Previous research showed that when the target and distractors differ along both color and shape dimensions (i.e., bidimensional search), distinctiveness along individual dimensions combine collinearly to guide the search, following a city-block metric. This result was found when participants expected the target and distractors to differ along both dimensions. In the present study, we used an instruction manipulation to investigate how bidimensional search varies in response to different top-down instructions. Using unidimensional search performance observed in Experiment 1, we predicted bidimensional search performance under three conditions: when participants were in

SUBMITTER: Xu ZJ 

PROVIDER: S-EPMC11682205 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature