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Interindividual differences in Pavlovian influence on learning are consistent
Sepehr Saeedpour1, Mostafa Minadari Hossein2, Ophelia Deroy3,4,5
1Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran.
Royal Society Open Science
|September 22, 2023
Summary
Pavlovian influences on learning are stable over time. Individual differences in Pavlovian bias, measured using a Go-NoGo task, showed consistency across a two-week period.
Area of Science:
- Cognitive Neuroscience
- Behavioral Science
Background:
- Pavlovian influences can interfere with instrumental learning.
- Previous research on the temporal stability of individual differences in Pavlovian influence yielded mixed results.
Purpose of the Study:
- To investigate the test-retest reliability of Pavlovian influence over a two-week interval.
- To introduce a web-based Go-NoGo paradigm for measuring Pavlovian bias.
Main Methods:
- A web-based Go-NoGo task was used to measure Pavlovian influence.
- Participants' learning performance and Pavlovian bias were assessed twice over a two-week period.
- Reinforcement learning models were fitted to the behavioral data.
Main Results:
- Pavlovian influence showed consistent individual differences across the two-week window.
- Reliability was observed in raw learning measures (accuracy), linear estimates of bias (r=0.40), and model-derived parameters (r=0.25).
- While consistent, the observed correlations were lower than typical psychometric standards.
Conclusions:
- Pavlovian bias represents a relatively stable individual characteristic.
- The findings support the use of Pavlovian bias measures in computational psychiatry and understanding individual differences in learning.
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