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Related Concept Videos

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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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Equivalence class formation when responding is separated from sample and comparison stimuli: Working memory, priming,

Lanny Fields1, Erica Doran2, John J Foxe3

  • 1Queens College and The Graduate Center/The City University of New York (CUNY).

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Equivalence class formation was nearly doubled when participants responded after, not during, stimulus comparisons. This finding highlights the importance of temporal separation for establishing complex cognitive structures.

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equivalence classesresponse windowstimulus primingsuccessive MTStrace stimulus pairing

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Area of Science:

  • Cognitive Psychology
  • Behavioral Science
  • Neuroscience

Background:

  • Equivalence class formation is a fundamental learning process.
  • Previous research suggested overlap between stimuli and responses might be necessary.
  • The role of temporal dissociation in equivalence class formation remains unclear.

Purpose of the Study:

  • To investigate whether equivalence class formation requires overlap between comparison stimuli and responding.
  • To examine the effect of temporally separating responding from comparison stimuli on class formation.
  • To compare the efficacy of different trial structures for establishing equivalence classes.

Main Methods:

  • Participants completed trials with a sample, a non-overlapping comparison, and a response window (trace-stimulus-pairing two-response with response window; TSP-2R-RW).
  • Equivalence classes were assessed using ABCD tests and probe trials.
  • A matched experiment involved responding during comparison stimuli for direct comparison.

Main Results:

  • All participants successfully formed 3-member and subsequently 4-member equivalence classes when responding was temporally dissociated from comparisons.
  • Separating response from comparison stimuli nearly doubled class formation rates compared to responding during comparisons (100% vs. 54%).
  • Three-member probes enhanced the expansion of equivalence classes to four members.

Conclusions:

  • Temporally separating responding from comparison stimuli significantly enhances equivalence class formation.
  • The TSP-2R-RW trial structure effectively establishes equivalence classes and may serve as a measure of neural substrates.
  • These findings challenge previous assumptions about stimulus-response overlap in complex learning.