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Throwing the baby out with the bathwater: Problems in modeling aggregated eye-movement data

Published online by Cambridge University Press:  29 March 2004

Gary Feng
Gary Feng*
Affiliation:
Department of Psychology: Social and Health Sciences, Duke University, Durham, NC27708http://www.psych-shs.duke.edu/faculty/facultyfeng.html
*
[email protected]
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Abstract:

Parameters in E-Z Reader models are estimated on the basis of a simple data set consisting of 30 means. Because of heavy aggregation, the data have a severe problem of multicolinearity and are unable to adequately constrain parameter values. This could give the model more power than the empirical data warrant. Future models should exploit the richness of eye movement data and avoid excessive aggregation.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 26 , Issue 4 , August 2003 , pp. 482 - 483
Copyright
Copyright © Cambridge University Press 2003

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