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ERIC Number: EJ965032
Record Type: Journal
Publication Date: 2012-Feb
Pages: 11
Abstractor: As Provided
Reference Count: 39
ISBN: N/A
ISSN: ISSN-0096-1523
Saccade Launch Site as a Predictor of Fixation Durations in Reading: Comments on Hand, Miellet, O'Donnell, and Sereno (2010)
Slattery, Timothy J.; Staub, Adrian; Rayner, Keith
Journal of Experimental Psychology: Human Perception and Performance, v38 n1 p251-261 Feb 2012
An important question in research on eye movements in reading is whether word frequency and word predictability have additive or interactive effects on fixation durations. A fair number of studies have reported only additive effects of the frequency and predictability of a target word on reading times on that word, failing to show significant interactions. Recently, however, Hand, Miellet, O'Donnell, and Sereno (2010) reported interactive effects in a study that included the distance of the prior fixation from the target word (launch site). They reported that when the saccade into the target word was launched from very near to the word (within 3 characters), the predictability effect was larger for low frequency words, but when the saccade was launched from a medium distance (4-6 characters from the word) the predictability effect was larger for high frequency words. Hand et al. argued for the importance of including launch site in analyses of target word fixation durations. Here we describe several problems with Hand et al.'s use of analyses of variance in which launch site is divided into distinct ordinal levels. We describe a more appropriate way to analyze such data--linear mixed-effect models--and we use this method to show that launch site does not modulate the interaction between frequency and predictability in two other data sets. (Contains 4 figures, 5 tables and 6 footnotes.)
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail: order@apa.org; Web site: http://www.apa.org/publications
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: California