Repository: OpenScienceRepository
Depends: R (>= 2.14)
Date: 2009-01-01 00:00:00
Title: Mixed Responses: Why Readers Spend Less Time at Unfavorable Landing Positions
Description: This paper investigates why the average fixation duration tends to  decrease from the center to the two ends of a word. Specifically, it  examines (a) whether unfavorable landing positions trigger a corrective  mechanism, (b) whether the triggering is based on the internal efference  copy mechanism, and (c) whether the corrective mechanism is specific to  fixations that missed their targeted words. To estimate the mean and  proportion of the corrective fixations, a 3-parameter mixture model was  fitted to distributions of first fixation duration from two large eye  movement databases in studies 1 and 2. Study 3 experimentally created  mislocated fixations using a gaze-contingent screen shift paradigm.  There is little evidence for the efference copy mechanism and limited  support for the mislocated fixations hypothesis. Overall, data suggest a  process that terminates fixations sooner than would during normal  reading; it is triggered by the visual input during a fixation, and is  flexibly engaged at eccentric landing positions and in reading short  words. Implications to theories of reading eye movements are discussed.   PS: Study 1 is based on the Dundee English reading corpus, kindly  provided by Allen Kennedy. The "dundee.rda" data file contains all the  cases, with additional variables derived from the data. Note, the actual  fixated words are removed from this dataset as they are not relevant.  The full data set is available from Dr. Kennedy. Also see the  publication for original references for the Dundee corpus. PPS: Studies 2 &amp; 3 are based on a subset of data from Feng et al.  (2009). These are the English adult data; see the Method section.  Complete dataset available upon request. Feng, G. (2009). Mixed Responses: Why Readers Spend Less Time at  Unfavorable Landing Positions. Journal of Eye Movement Research, 3(2):3,  1-26.www.jemr.org/online/3/2/2
Author: Gary Feng
Maintainer: Gary Feng <garyfeng@duke.edu>
Authors@R: c(person(given ="Gary", family = "Feng", email = "garyfeng@duke.edu", role = c("aut", "cre")))
Package: Feng2009
Version: 1.0
License: CC BY-NC (http://creativecommons.org/licenses/by-nc/3.0/de/)
