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Proper name hypermnesia in an autistic subject
L Mottron1, S Belleville, E Stip
1Hôpital Rivière-des-prairies, Montréal, Canada.
Brain and Language
|June 1, 1996
Summary
This study reveals an autistic individual with exceptional memory for person names, demonstrating selective hypermnesia in recall and recognition tasks. This unique pattern suggests specialized memory networks for proper names.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Autism Spectrum Disorder Research
Background:
- Autism Spectrum Disorder (ASD) is often associated with unique cognitive profiles, including exceptional abilities in specific domains.
- Hypermnesia, an enhancement of memory over time, is a rare phenomenon, particularly when focused on specific information types like proper names.
Observation:
- A case study of an autistic individual (NM) with hypermnesia for person names is presented.
- NM's performance in memorizing person names was compared to normal controls, IQ-matched controls, and an overtrained control.
- Selective hypermnesia was observed for free recall of person names and face recognition, but not for common names or biographical information.
Findings:
- NM demonstrated exceptional recall for person names, exceeding control groups.
- Hypermnesia was specific to list learning of names, with lower performance in face-name associative learning tasks.
- The results suggest that contextual regularity of proper names in everyday situations may contribute to enhanced memorization in individuals with autism.
Implications:
- The findings support a double dissociation between proper names and other semantic information, challenging traditional memory models.
- A network model of proper name memory may better explain NM's performance compared to a sequential model.
- This research offers insights into the cognitive mechanisms underlying exceptional memory abilities in savant syndrome and autism.