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Related Experiment Video

Updated: Jun 13, 2026

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
10:51

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans

Published on: January 15, 2018

Perceiving action boundaries: learning effects in perceiving maximum jumping-reach affordances.

Verónica C Ramenzoni1, Tehran J Davis, Michael A Riley

  • 1Department of Psychology, University of Cincinnati, Cincinnati, Ohio 45221-0376, USA.

Attention, Perception & Psychophysics
|May 4, 2010
PubMed
Summary

Perceptual learning improves self-estimates of jumping reach, but not others

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Related Experiment Videos

Last Updated: Jun 13, 2026

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
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A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

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Area of Science:

  • Cognitive Psychology
  • Motor Control
  • Perception

Background:

  • Effective coordination relies on perceiving others' capabilities.
  • Perceptual learning, through practice, can enhance these abilities.

Purpose of the Study:

  • Investigate perceptual learning in estimating others' maximum jumping reach.
  • Compare self-estimates with estimates of another person's capabilities.

Main Methods:

  • Two experiments assessed participants' ability to estimate maximum jumping-reach height.
  • Experiment 1: compared self-estimates with actor estimates over time.
  • Experiment 2: examined the effect of observing related vs. unrelated actions.

Main Results:

  • Participants improved self-estimates without feedback, but not estimates for others.
  • Observing a related action improved estimates of the actor's jumping reach.
  • Observing a non-related action did not improve estimates for the actor.

Conclusions:

  • Perceived affordances for self and others show some independence.
  • Affordance judgments are not solely determined by perceiver characteristics.