Detecting conjunctions of color and form in parallel

J. Toby Mordkoff, Steven Yantis, Howard E. Egeth

Research output: Contribution to journalArticle

Abstract

Certain theories of visual attention assume that at least one processing stage must be serial when the target of search is defined as the conjunction of two or more separable features. To explain why conjunction-search response times do not always form linearly increasing functions of display size, recent versions of this general model have posited the existence of an early parallel process that guides the serial stage toward display elements that are likely targets. Other models have relaxed the seriality assumption, allowing for a limited number of parallel decisions. In the three experiments reported here, a redundant-target detection task was used with conjunctively defined targets and display sizes of two (Experiment 1), one or two (Experiment 2), and six (Experiment 3). In all three experiments, strong evidence for parallel processing was observed. The implications for models of elementary visual processes are discussed.

Original languageEnglish (US)
Pages (from-to)157-168
Number of pages12
JournalPerception & Psychophysics
Volume48
Issue number2
DOIs
StatePublished - Mar 1 1990

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • Psychology(all)

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