The Effect of Exposure Duration on Visual Character Identification in Single, Whole, and Partial Report

Autor/inn/en	Petersen, Anders; Andersen, Tobias S.
Titel	The Effect of Exposure Duration on Visual Character Identification in Single, Whole, and Partial Report
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 38 (2012) 2, S.498-514 (17 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0026728
Schlagwörter	Identification; Alphabets; Time; Visual Perception; Attention; Short Term Memory; Psychometrics; Comparative Analysis; Foreign Countries; Denmark + Suchen Sie Ihr Suchwort? Identifikation; Identifizierung; Buchstabenschrift; Zeit; Visuelle Wahrnehmung; Aufmerksamkeit; Kurzzeitgedächtnis; Psychometry; Psychometrie; Ausland; Dänemark
Abstract	The psychometric function of single-letter identification is typically described as a function of stimulus intensity. However, the effect of stimulus exposure duration on letter identification remains poorly described. This is surprising because the effect of exposure duration has played a central role in modeling performance in whole and partial report (Shibuya & Bundesen, 1988). Therefore, we experimentally investigated visual letter identification as a function of exposure duration. We compared the exponential, the gamma, and the Weibull psychometric functions, all with a temporal offset included, as well as the ex-Gaussian, the log-logistic, and finally the squared-logistic, which is a psychometric function that to our knowledge has not been described before. The log-logistic and the squared-logistic psychometric function fit well to experimental data. Also, we conducted an experiment to test the ability of the psychometric functions to fit single-letter identification data, at different stimulus contrast levels; also here the same psychometric functions prevailed. Finally, after insertion into Bundesen's Theory of Visual Attention (Bundesen, 1990), the same psychometric functions enable closer fits to data from a previous whole and partial report experiment. (Contains 8 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10