Roles of salience and strategy in conjunction search.

Sobel, K.V. and Cave, K.R. (2002) Roles of salience and strategy in conjunction search. Journal of Experimental Psychology: Human Perception and Performance, 28 (5), 1055-1070.

Abstract

In some cases, the search for a conjunction target proceeds through the smaller group of elements in a display, whereas in others, search is limited to those elements that share a particular feature with the target. In 6 experiments, participants searched for a conjunction target among displays consisting of various proportions of 2 distractor types. Smaller-group search was more prevalent than target-feature search with denser displays and with features that were highly discriminable. Explicit instructions to limit search to a specific feature affected performance only when the discriminability of the guiding feature was much greater than the other target feature. Together, these experiments show that bottom-up factors have more influence in guiding conjunction searches than previously thought.

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