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Using E-Z Reader to Examine the Consequences of Fixation-Location Measurement Error
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Abstract:
There is an on-going 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 three simulations that examine how systematic and random error in the measurement of fixation locations can generate two 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.
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Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4268100/
http://www.ncbi.nlm.nih.gov/pubmed/24933699
https://doi.org/10.1037/a0037090
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