August 2014
Volume 14, Issue 10
Free
Vision Sciences Society Annual Meeting Abstract  |   August 2014
Normative Data for Forty, Morphing, Line Drawn Picture Sets
Author Affiliations
  • Elisabeth Stoettinger
    University of Waterloo, Department of Psychology
  • Nazanin Mohammadi Sepahvand
    University of Waterloo, Department of Psychology
  • Nadine Quehl
    University of Waterloo, Department of Psychology
  • James Danckert
    University of Waterloo, Department of Psychology
  • Britt Anderson
    University of Waterloo, Department of Psychology
Journal of Vision August 2014, Vol.14, 60. doi:10.1167/14.10.60
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      Elisabeth Stoettinger, Nazanin Mohammadi Sepahvand, Nadine Quehl, James Danckert, Britt Anderson; Normative Data for Forty, Morphing, Line Drawn Picture Sets. Journal of Vision 2014;14(10):60. doi: 10.1167/14.10.60.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The updating of perceptual representations is important to a number of areas of psychology including the areas of set shifting, perserveration, theory of mind, perceptual learning, and our own interest in mental model updating. Many tasks that are used to detect such updating use simple stimuli such as motor sequences. When more complex stimuli are used it is often difficult to determine the importance of shifts, because normative data are not available. To better characterize how and when people update perceptual representations of ambiguous stimuli, we measured how people change their reports of percepts of line drawings that gradually morph (over 15 iterations) from one object to another. Here we present normative data for forty picture series that morphed from an animate to an inanimate object (or vice versa if shown in reverse order) or morphed within the animate and inanimate classes. When a participant goes from labeling an image sequence by the first label to a new label, an update to their perceptual representation can be inferred. The number of first image labels was used to measure of how long it takes participants to update. 178 participants labeled the pictures in our sets. Each set was rated by an average of 45 people (min =35, max = 65). On average participants updated from the first representation after 7 (± 0.91) pictures (min = 4.8, max = 9.7). Naming consistency for individual images ranged from 9 percent to 95 percent with a mean of 64 (± 21) percent. These picture sets are easy to administer and have been used within vastly different participant populations (3 and 5 year old children, healthy seniors, brain damaged persons). Given the perceptual simplicity these stimuli are also useful for EEG and fMRI studies.

Meeting abstract presented at VSS 2014

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