Related Experiment Videos
Validity of the construct of nonverbal memory: a factor-analytic study in a normal elderly sample
G E Smith1, J F Malec, R J Ivnik
1Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN.
Journal of Clinical and Experimental Neuropsychology
|March 1, 1992
Summary
This study investigated nonverbal memory in older adults using the Visual Spatial Learning Test (VSLT). Findings suggest nonverbal memory may not be distinct from verbal memory in this population.
Area of Science:
- Neuroscience
- Psychology
Background:
- Evaluating nonverbal memory is challenging due to the difficulty in finding purely nonverbal measures.
- Initial research with the Visual Spatial Learning Test (VSLT) shows promise for assessing nonverbal memory.
Purpose of the Study:
- To examine the construct of nonverbal memory in a normal elderly sample.
- To assess the validity of nonverbal memory as a distinct construct from verbal memory in older adults.
Main Methods:
- A sample of 460 community-dwelling older adults (ages 55-95) underwent neuropsychological testing.
- Tests included the Wechsler Adult Intelligence Scale-Revised, Wechsler Memory Scale-Revised, Rey Auditory Verbal Learning Test, and the Visual Spatial Learning Test (VSLT).
- Exploratory factor analyses were conducted on two variable sets to examine memory factors.
Main Results:
- A single general memory factor was consistently observed across analyses.
- No distinct modality-specific or time-specific memory factors were identified.
- Results challenge the existence of nonverbal memory as separate from verbal memory in older adults.
Conclusions:
- The findings, combined with prior research, question the validity of nonverbal memory as a distinct construct.
- This distinction appears particularly questionable in normal older adult populations.
- Further research is needed to clarify the relationship between verbal and nonverbal memory in aging.