Abstract

A visual search reaction time task was used to examine the relationships among encoding, comparison, and search processes. Targets, either pictures of objects or their names, were briefly presented and followed, at stimulus onset asynchronies (SOAs) ranging from 200 to 2000 ms, by pictorial scenes having a 50% probability of containing the target. Generally, subjects responded more rapidly with picture than word targets, this difference diminishing at longer SOAs. Searches appeared to be restricted to certain portions of the scene depending on the congruency between the target and the scene. The sequence of decisions in the search task was discussed.

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