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Discriminative learning and associative memory under the differential outcomes procedure is modulated by cognitive
Luis J Fuentes1, Michael Molina2, Victoria Plaza3
1Departamento de Psicología Básica y Metodología, Universidad de Murcia, Murcia, Spain.
Acta Psychologica
|June 23, 2020
Summary
The differential outcomes procedure (DOP) enhances long-term memory for complex associations, especially when working memory (WM) is highly taxed. This learning technique aids discriminative learning and memory maintenance.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Learning Sciences
Background:
- Working memory (WM) deficits are linked to associative memory impairments in older adults.
- The differential outcomes procedure (DOP) has shown promise in improving associative memory maintenance, particularly in simulated medical adherence tasks.
- The DOP involves unique reinforcers for each stimulus-stimulus association to enhance learning.
Purpose of the Study:
- To investigate the cognitive load limits of the DOP in enhancing discriminative learning and associative memory.
- To assess the DOP's effectiveness in a task simulating medical treatment adherence among undergraduate students.
- To determine if the DOP's benefits are contingent on the level of cognitive demand.
Main Methods:
- Participants learned pill/name associations under either a low-load (3 associations) or high-load (4 associations) condition.
- The DOP was compared against a control condition (non-differential outcomes procedure, NOP).
- Long-term retention was tested 1 hour and 1 week post-training.
Main Results:
- The DOP significantly improved accuracy and long-term retention of learned associations.
- This benefit was observed exclusively in the high-load condition, indicating a role under high cognitive demand.
- No significant improvement was found in the low-load condition with the DOP.
Conclusions:
- The DOP is crucial for long-term maintenance of stimulus-stimulus associations when working memory is overloaded.
- This procedure offers a valuable method for enhancing discriminative learning and associative memory, particularly under demanding cognitive conditions.
- The findings highlight the DOP's potential utility in educational and clinical settings requiring robust memory formation.
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