It is necessary to discuss some preliminary issues before proceeding to a model of attentional capture.
However, eye movements are not always a perfect predictor of the outcome of processing, pointing to interesting aspects of the effect of visual search. Eye movement data help isolate the processing components of visual search and permit a finer-grained analysis of the task. Specifically, I will discuss why eye movements are useful for highlighting the role of memory in visual search and the consequences of visual search processing on memory. In this chapter, I will review work on how eye movements have been used in visual search research, focusing on the effect of memory on visual search. Eye movements provide incredibly useful data for parsing complex tasks that rely on visual processing. The challenge in studying a complex task like visual search is trying to determine the relative contributions of each of these components. Visual search is an everyday task that requires the coordination of vision, attention, and memory. Williams, in Psychology of Learning and Motivation, 2020 Abstract At present, this has proven to be one of the more recalcitrant problems in visual search.Ĭarrick C. It may be based on elapsed time or on some search metric such as the proportion of items rejected (regardless of whether they have been inadvertently rejected more than once). It proves to be difficult to produce a satisfying definition of long enough. Instead, search must end when the observer deems that he has searched for long enough. However, this only works if observers have perfect memory for attended and rejected items and, as noted above, it is quite clear that this is not the case. Search ends when all items have been selected and rejected. When does the search end if the target is not found? Models that propose serial selection of items have a simple answer. More problematic is the case of unsuccessful search. Successful searches are easy to understand.
Reynolds, in The Senses: A Comprehensive Reference, 2008 2.16.6 Terminating Unsuccessful SearchesĪll visual searches must come to an end.
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