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Learning to reproduce a list and memory for the learning.
1Department of Psychology, Rice University, Houston, TX 77251.
The American Journal of Psychology
|January 1, 1991
Summary
The Hebb effect, or improved memory recall with repeated lists, may require conscious awareness of the repetition. Studies suggest memory improvement doesn't occur without noticing list repetition.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Memory Research
Background:
- The Hebb effect demonstrates improved immediate verbal recall with list repetition.
- It remains unclear if this effect occurs without subjects noticing list repetition.
- Previous evidence on this question is limited and inconsistent.
Purpose of the Study:
- To investigate whether the Hebb effect in memory recall requires awareness of list repetition.
- To quantitatively assess repetition awareness using recognition and frequency estimation tasks.
Main Methods:
- Two experiments were conducted involving immediate verbal reproduction trials.
- Subsequent tests assessed participants' recognition of repeated lists and their estimates of list presentation frequency.
- Effect-size analyses compared the sensitivity of reproduction, recognition, and frequency estimation to repetition.
Main Results:
- The Hebb effect was observed, with performance improving on repeated lists.
- No evidence was found for the Hebb effect occurring without awareness of list repetition.
- Recognition and frequency estimation were more sensitive to repetition than reproduction performance.
Conclusions:
- The Hebb effect may necessitate conscious awareness of list repetition.
- Memory recall performance alone cannot account for the Hebb effect.
- Awareness of repetition appears crucial for the Hebb effect phenomenon.