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Functional classes and equivalence relations.

M Sidman, C K Wynne, R W Maguire

    Journal of the Experimental Analysis of Behavior
    |November 1, 1989
    PubMed
    Summary
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    Stimulus control reversals in adults created functional stimulus classes, demonstrating emergent conditional discriminations. Equivalence relations further organized these classes, impacting stimulus control.

    Area of Science:

    • Behavioral Psychology
    • Cognitive Science
    • Learning Theory

    Background:

    • Simultaneous discriminations are fundamental learning tasks.
    • Reversal learning paradigms investigate adaptive behavioral changes.
    • Understanding stimulus classes is key to complex cognition.

    Purpose of the Study:

    • To investigate the formation of functional stimulus classes through reversal learning.
    • To examine the emergence of conditional discriminations within these classes.
    • To explore the role of equivalence relations in organizing stimulus classes.

    Main Methods:

    • Adult subjects learned simultaneous discriminations with reversed contingencies.
    • Conditional discriminations were assessed using sample-comparison tasks.

    Related Experiment Videos

  • Equivalence relation properties (symmetry, transitivity) were tested.
  • Subsequent discrimination tasks evaluated stimulus class transfer.

    • Main Results:

    • Reversal learning rapidly established functional stimulus classes across all subjects.
    • Conditional discriminations emerged within these classes.
    • Two subjects demonstrated equivalence relations, showing symmetry and transitivity.
    • Equivalence testing altered stimulus control in one subject.

    Conclusions:

    • Reversal learning can establish functional stimulus classes and emergent conditional discriminations.
    • Equivalence relations can organize these classes, but may also disrupt prior learning.
    • The findings contribute to understanding complex stimulus control and learning.