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Related Experiment Videos

Speed analyses of stimulus equivalence

T J Spencer1, P N Chase

  • 1West Virginia University, Morgantown 26506-6040, USA.

Journal of the Experimental Analysis of Behavior
|May 1, 1996
PubMed
Summary

This study explored stimulus substitutability in equivalence classes, finding response speed, not accuracy, reliably indicates relation strength even after extensive testing. This offers a new measure for learning.

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Area of Science:

  • Behavioral Psychology
  • Cognitive Science
  • Learning Theory

Background:

  • Equivalence relations are fundamental in understanding learning and cognition.
  • Functional substitutability of stimuli is a key aspect of these relations.
  • Measuring the strength of learned associations is crucial for research.

Purpose of the Study:

  • To investigate the functional substitutability of stimuli within equivalence classes.
  • To compare response speed and accuracy as measures of learned relations.
  • To examine how nodal distance and trial type affect these measures.

Main Methods:

  • College students were trained on 18 conditional relations.
  • Response accuracy and speed were measured across different trial types (baseline, symmetry, transitivity) and nodal distances.
  • Three groups (instructed, queried, standard) were compared for generality.

Main Results:

  • Accuracy differences were significant only on initial equivalence tests.
  • Response speed differences remained significant even after extended testing.
  • Response speed was inversely related to nodal distance, indicating slower responses for more complex relations.

Conclusions:

  • Response speed is a more robust indicator of learned relation strength than accuracy.
  • The number of nodes in a relation influences response speed.
  • Instructions and queries did not significantly alter group performance, suggesting inherent properties of the learning process.

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