ERIC Number: EJ781510
Record Type: Journal
Publication Date: 2007-Dec
Reference Count: 0
The Role of Eye Movements in Subitizing and Counting
Watson, Derrick G.; Maylor, Elizabeth A.; Bruce, Lucy A. M.
Journal of Experimental Psychology: Human Perception and Performance, v33 n6 p1389-1399 Dec 2007
Previous work has suggested that eye movements may be necessary for accurate enumeration beyond the subitization range of about 4 items. This study determined the frequency of eye movements normally made during enumeration, their relationship to response times, and whether they are required for accurate performance. This was achieved by monitoring eye movements and comparing performance when observers were allowed to saccade and when they were not. The results showed that (a) there was a sharp increase in saccadic frequency beyond about 4 items (from = 0.2 saccades per item to about 1 per item), and (b) enumeration of fewer than 4 items remained rapid and accurate even when eye movements were prevented, whereas enumeration beyond this became less efficient and sometimes less accurate. The results are discussed in relation to the memory and processing requirements of enumeration tasks.
Descriptors: Eye Movements, Computation, Cognitive Processes, Reaction Time, Performance, Comparative Analysis, Memory
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A