The item-specific proportion congruency effect can be contaminated by short-term repetition priming
1Department of Psychology, University of Toronto, Sidney Smith Hall, 100 St. George Street, Toronto, ON, M5S 3G3, Canada. brett.cochrane@utoronto.ca.
Attention, Perception & Psychophysics
|November 25, 2021
Summary
The item-specific proportion congruency (ISPC) effect is influenced by both long-term memory and short-term repetition priming. Removing stimulus repetitions significantly reduced the ISPC effect, highlighting the role of repetition priming.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Memory
Background:
- The item-specific proportion congruency (ISPC) effect describes larger Stroop congruency effects for more frequent congruent items.
- This effect is traditionally attributed to long-term memory associations.
- However, stimulus repetitions vary across conditions, suggesting potential short-term repetition priming contributions.
Purpose of the Study:
- To investigate whether the ISPC effect arises from distinct long-term associative learning and short-term repetition priming processes.
- To differentiate the contributions of these two memory systems to the ISPC effect.
Main Methods:
- Compared the magnitude of the ISPC effect under conditions with and without stimulus repetitions.
- Utilized a Stroop task with manipulated item-specific proportions.
Main Results:
- The ISPC effect was robust even when stimulus repetitions were absent.
- Removing stimulus repetitions significantly attenuated the magnitude of the ISPC effect.
- This indicates that short-term repetition priming plays a role in the ISPC effect.
Conclusions:
- The ISPC effect is not solely based on long-term memory associations.
- Both short-term repetition priming and long-term memory processes contribute to the ISPC effect.
- Future research should consider both mechanisms when studying the ISPC effect.
Keywords:
Congruency sequence effectItem-specific proportion congruency effectRepetition primingStroop taskMore Related Videos
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