title: Using E-Z Reader to examine the consequences of fixation-location measurement error.
abstract: There is an ongoing debate about whether fixation durations during reading are only influenced by the processing difficulty of the words being fixated (i.e., the serial-attention hypothesis) or whether they are also influenced by the processing difficulty of the previous and/or upcoming words (i.e., the attention-gradient hypothesis). This article reports the results of 3 simulations that examine how systematic and random errors in the measurement of fixation locations can generate 2 phenomena that support the attention-gradient hypothesis: parafoveal-on-foveal effects and large spillover effects. These simulations demonstrate how measurement error can produce these effects within the context of a computational model of eye-movement control during reading (E-Z Reader; Reichle, 2011) that instantiates strictly serial allocation of attention, thus demonstrating that these effects do not necessarily provide strong evidence against the serial-attention hypothesis.
authors.affiliation: School of Psychology, University of Southampton.
authors.forename: Erik D
authors.initials: ED
authors.lastname: Reichle
authors.affiliation: School of Psychology, University of Southampton.
authors.forename: Denis
authors.initials: D
authors.lastname: Drieghe
mesh_terms: D001288:Attention; D003198:Computer Simulation; D055615:Electrical Equipment and Supplies; D005133:Eye Movements; D006801:Humans; D008954:Models, Biological; D011932:Reading; D013997:Time Factors