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Training on integrated versus separated Stroop tasks: the progression of interference and facilitation
1Division of Life Sciences, University of Toronto, Scarborough, ON, Canada. macleod@scar.utoronto.ca
Memory & Cognition
|May 19, 1998
Summary
Stroop task training shows interference rapidly decreases with integrated stimuli, while facilitation remains stable. These findings suggest distinct mechanisms for interference and facilitation in cognitive tasks.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Factors
Background:
- The Stroop task is a classic measure of cognitive interference.
- Understanding how interference and facilitation change with practice is crucial for cognitive models.
Purpose of the Study:
- To investigate the time course of interference and facilitation in two versions of the Stroop task during training.
- To compare the effects of integrated versus separated stimuli on Stroop task performance.
Main Methods:
- Two experiments (5 and 10 days) using integrated and separated Stroop tasks with congruent, incongruent, and neutral stimuli.
- Training involved repeated exposure to color-word stimuli.
- Post-training assessment of a word reading task.
Main Results:
- Facilitation from congruent stimuli was small, stable, and similar across both task versions.
- Interference in the integrated task decreased sharply in the first three days, then slowed.
- Interference in the separated task showed a gradual decline.
- Stroop training did not impact subsequent word reading performance.
Conclusions:
- Stroop interference initially involves overcoming integration and managing conflicting information.
- Practice quickly resolves the integration challenge, making task versions comparable.
- Facilitation and interference may operate independently, challenging current Stroop effect theories.
