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ERIC Number: EJ827098
Record Type: Journal
Publication Date: 2009-Feb
Pages: 13
Abstractor: As Provided
Reference Count: 43
ISSN: ISSN-0096-1523
Selection Difficulty and Interitem Competition Are Independent Factors in Rapid Visual Stream Perception
Kawahara, Jun-ichiro; Enns, James T.
Journal of Experimental Psychology: Human Perception and Performance, v35 n1 p146-158 Feb 2009
When observers try to identify successive targets in a visual stream at a rate of 100 ms per item, accuracy for the 2nd target is impaired for intertarget lags of 100-500 ms. Yet, when the same stream is presented more rapidly (e.g., 50 ms per item), this pattern reverses and a 1st-target deficit is obtained. M. C. Potter, A. Staub, and D. H. O'Connor (2002) accounted for these findings with a 2-stage competition theory (detection followed by identification) in which each stage is limited by its own pool of resources. In 5 experiments we varied the items that preceded the 1st target. The results show strong influences of these leading items on the 1st-target deficit, with almost no influence on 2nd-target accuracy. This is interpreted as strong support for multiple factors influencing target accuracy in rapid visual streams (J. Kawahara, J. T. Enns, & V. Di Lollo, 2006). (Contains 1 footnote and 6 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Canada