Selection Difficulty and Interitem Competition Are Independent Factors in Rapid Visual Stream Perception

Autor/inn/en	Kawahara, Jun-ichiro; Enns, James T.
Titel	Selection Difficulty and Interitem Competition Are Independent Factors in Rapid Visual Stream Perception
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 35 (2009) 1, S.146-158 (13 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0013164
Schlagwörter	Competition; Observation; Visual Perception; Experiments; Undergraduate Students; Visual Stimuli; Attention; Canada + Suchen Sie Ihr Suchwort? Wettkampf; Beobachtung; Visuelle Wahrnehmung; Erprobung; Aufmerksamkeit; Kanada
Abstract	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.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10