Research article summary (published 29 Apr 2002):

Perception of two-body center of mass.

Full Abstract

Participants estimated the perceptual center of mass between two horizontally oriented black dots varying in size and distance. Experiment 1 showed that estimates, measured as distance from the larger dot's center, decreased with an increase in size ratio between the dots and a decrease in the distance between them, as predicted by the physical center-of-mass equation. The results were replicated and extended in further experiments with different ratios and distances. In all experiments, the true center was consistently overestimated, either because the stimuli were perceived in a low dimensionality or because of a hesitancy to place estimates near the larger dot's edge. In Experiment 4, the center was deliberately placed near this edge for one- and two-dimensional solutions. Participants still overestimated, indicating an "edge effect" as responsible.

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Author information

Author/s: Friedenberg, Jay (J); Liby, Bruce (B);

Affiliation: Department of Psychology, Manhattan College, Riverdale, NY 10471, USA. jfrieden(-atsign-)manhattan.edu

Journal and publication information

Publication Type: Journal Article

Journal: Perception & psychophysics (Percept Psychophys), published in United States. (Language: eng)

Reference: 2002-May; vol 64 (issue 4) : pp 531-9

Dates: Created 2002/07/22; Completed 2003/02/10; Revised 2004/11/17;

PMID: 12132756, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Adult Discrimination Learning Female Humans Imagination

Male Orientation Pattern Recognition, Visual Psychophysics Size Perception Weight Perception

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