Free Recall Task¶
HED Task ID: hedtsk_free_recall
Also known as: Recall Task
Study of a list of items followed by unaided recall in any order; serial-position curves dissociate primacy and recency.
Description¶
Participants study a list of items (typically words) presented sequentially, then attempt to recall all items in any order during an extended recall period. Performance is analyzed via serial position curves showing primacy effects (enhanced recall of early items, attributed to long-term memory consolidation) and recency effects (enhanced recall of recent items, attributed to short-term memory). Clustering analyses examine whether semantically or contextually related items are recalled together, revealing the organization of memory search. The task engages prefrontal, parietal, and temporal memory networks.
Inclusion test¶
Procedure |
Participants study a list of items (words, pictures) presented one at a time, then recall as many as possible in any order after the last item. |
Manipulation |
List length; presentation rate; semantic organization; encoding task (deep vs. shallow); retention interval (immediate vs. delayed). |
Measurement |
Total items recalled; serial position curve (primacy, recency); temporal clustering; semantic clustering. |
Variations¶
Variation |
Description |
Justification |
|---|---|---|
Immediate Free Recall (IFR) |
Recall immediately after list presentation; shows primacy and recency. |
Recall tested immediately after list; canonical free recall |
Delayed Free Recall (DFR) |
Distractor-filled delay before recall; eliminates recency effect. |
Filled delay before recall; tests long-term retention |
Continual Distractor Free Recall (CDFR) |
Distractors between every item and after last item; dissociates short-term and long-term recency. |
Distractors between each item and at end; eliminates recency via distractor |
Final Free Recall |
Recall all items from all preceding lists; tests long-term retention. |
Recall all lists at end of session; tests long-term retention and inter-list organization |
Categorized Free Recall |
Lists contain items from semantic categories; reveals category clustering. |
Semantically categorized lists; tests organizational clustering |
Repeated Free Recall |
Same list recalled multiple times; shows hypermnesia (improvement across tests). |
Same list recalled multiple times; tests learning across trials |
Directed Forgetting in Free Recall |
Instructions to forget some items; reveals encoding and retrieval control. |
Forget instructions after list learning; suppression measured in free recall |
Externalized Free Recall |
Spoken recall recorded with precise timing for inter-response time analysis. |
Participants report all retrievals including partial/uncertain; different response protocol |
Cognitive processes¶
This task engages the following cognitive processes:
Key references¶
{‘authors’: ‘Polyn, S. M., Natu, V. S., Cohen, J. D., & Norman, K. A.’, ‘year’: 2005, ‘title’: ‘Category-Specific Cortical Activity Precedes Retrieval During Memory Search’, ‘venue’: ‘Science’, ‘venue_type’: ‘journal’, ‘journal’: ‘Science’, ‘volume’: ‘310’, ‘issue’: ‘5756’, ‘pages’: ‘1963-1966’, ‘doi’: ‘10.1126/science.1117645’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Polyn, S. M., Natu, V. S., Cohen, J. D., & Norman, K. A. (2005). Category-specific cortical activity precedes retrieval during memory search. Science, 310(5749), 1963-1966.’, ‘url’: ‘https://doi.org/10.1126/science.1117645’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Sederberg, P. B., Gauthier, L. V., Terushkin, V., Miller, J. F., Barnathan, J. A., & Kahana, M. J.’, ‘year’: 2006, ‘title’: ‘Oscillatory correlates of the primacy effect in episodic memory’, ‘venue’: ‘NeuroImage’, ‘venue_type’: ‘journal’, ‘journal’: ‘NeuroImage’, ‘volume’: ‘32’, ‘issue’: ‘3’, ‘pages’: ‘1422-1431’, ‘doi’: ‘10.1016/j.neuroimage.2006.04.223’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Sederberg, P. B., Gauthier, L. V., Terushkin, V., Miller, J. F., Barnathan, J. A., & Kahana, M. J. (2006). Oscillatory correlates of the primacy effect in episodic memory. NeuroImage, 32(3), 1422-1431.’, ‘url’: ‘https://doi.org/10.1016/j.neuroimage.2006.04.223’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
Recent references¶
{‘authors’: ‘Manning, J. R., & Kahana, M. J.’, ‘year’: 2012, ‘title’: ‘Interpreting semantic clustering effects in free recall’, ‘venue’: ‘Memory’, ‘venue_type’: ‘journal’, ‘journal’: ‘Memory’, ‘volume’: ‘20’, ‘issue’: ‘5’, ‘pages’: ‘511-517’, ‘doi’: ‘10.1080/09658211.2012.683010’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Kahana, M. J. (2012). Foundations of Human Memory. Oxford University Press. [Updated: Kahana, M. J. (2020). Computational models of memory search. Annual Review of Psychology, 71, 107–138.]’, ‘url’: ‘https://doi.org/10.1080/09658211.2012.683010’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Polyn, S. M., Norman, K. A., & Kahana, M. J.’, ‘year’: 2009, ‘title’: ‘A context maintenance and retrieval model of organizational processes in free recall.’, ‘venue’: ‘Psychological Review’, ‘venue_type’: ‘journal’, ‘journal’: ‘Psychological Review’, ‘volume’: ‘116’, ‘issue’: ‘1’, ‘pages’: ‘129-156’, ‘doi’: ‘10.1037/a0014420’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Polyn, S. M., Norman, K. A., & Kahana, M. J. (2009). A context maintenance and retrieval model of organizational processes in free recall. Psychological Review, 116(1), 129–156.’, ‘url’: ‘https://doi.org/10.1037/a0014420’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Lohnas, L. J., Polyn, S. M., & Kahana, M. J.’, ‘year’: 2015, ‘title’: ‘Expanding the scope of memory search: Modeling intralist and interlist effects in free recall.’, ‘venue’: ‘Psychological Review’, ‘venue_type’: ‘journal’, ‘journal’: ‘Psychological Review’, ‘volume’: ‘122’, ‘issue’: ‘2’, ‘pages’: ‘337-363’, ‘doi’: ‘10.1037/a0039036’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Lohnas, L. J., Polyn, S. M., & Kahana, M. J. (2015). Expanding the scope of memory search: Modeling intralist and interlist effects in free recall. Psychological Review, 122(2), 337–363.’, ‘url’: ‘https://doi.org/10.1037/a0039036’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}
{‘authors’: ‘Morton, N. W., Sherrill, K. R., & Preston, A. R.’, ‘year’: 2017, ‘title’: ‘Memory integration constructs maps of space, time, and concepts’, ‘venue’: ‘Current Opinion in Behavioral Sciences’, ‘venue_type’: ‘journal’, ‘journal’: ‘Current Opinion in Behavioral Sciences’, ‘volume’: ‘17’, ‘issue’: None, ‘pages’: ‘161-168’, ‘doi’: ‘10.1016/j.cobeha.2017.08.007’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Morton, N. W., Sherrill, K. R., & Preston, A. R. (2017). Memory integration constructs maps of space, time, and concepts. Current Opinion in Behavioral Sciences, 17, 161–168.’, ‘url’: ‘https://doi.org/10.1016/j.cobeha.2017.08.007’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}