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Related Experiment Videos

Representational momentum and Michotte's (1946/1963) "launching effect" paradigm.

T L Hubbard1, J A Blessum, S E Ruppel

  • 1Department of Psychology, Texas Christian University, Fort Worth 76129, USA. t.hubbard@tcu.edu

Journal of Experimental Psychology. Learning, Memory, and Cognition
|February 24, 2001
PubMed
Summary

In Michotte's launching effect, observers showed reduced memory displacement for targets. This suggests a belief that impetus from the launcher transfers to the target and then dissipates.

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Area of Science:

  • Cognitive Psychology
  • Perception
  • Motion Perception

Background:

  • A. Michotte's launching effect describes a moving object (launcher) contacting a stationary object (target), causing the target to move after the launcher stops.
  • Understanding how observers perceive and remember motion events is crucial for cognitive psychology.

Purpose of the Study:

  • To investigate memory displacement for target locations in modified launching effect displays.
  • To explore the influence of launcher-target interactions on spatial memory.

Main Methods:

  • Observers viewed modified launching effect displays.
  • Memory for target locations was assessed after the display.
  • Displacement of remembered target locations was measured and compared across conditions.

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Main Results:

  • Forward displacement of targets in launching effect displays was significantly decreased compared to isolated, independently moving targets.
  • This reduction in displacement was observed even when targets moved at various velocities or decelerated.
  • Displacement patterns were also reduced when target motion was orthogonal to the launcher's prior motion.

Conclusions:

  • The findings support naive impetus theory, suggesting observers attribute a transferred impetus from the launcher to the target.
  • The results indicate that perceived impetus dissipates over time, influencing spatial memory.
  • Explanations involving simple motion deceleration or landmark attraction were not supported by the data.