Modeling learning and memory using verbal learning tests: results from ACTIVE.

Area of Science:

• Cognitive Neuroscience
• Gerontology
• Psychology

Background:

• Cognitive training is explored for its potential to mitigate age-related memory decline.
• Understanding the specific components of memory, such as initial recall and learning, is crucial for evaluating training effectiveness.

Purpose of the Study:

• To investigate how memory training influences initial recall and the learning process over time.
• To analyze long-term changes in memory components using latent growth models.

Main Methods:

• Utilized data from the Advanced Cognitive Training for Independent and Vital Elderly study (N=1,401).
• Applied latent growth models to decompose trial-level recall into initial recall and learning.
• Assessed memory using the Auditory Verbal Learning Test (AVLT) and Hopkins Verbal Learning Test (HVLT) over a 5-year period.

Main Results:

• Memory training was linked to a slower decline in initial recall on the AVLT (d=0.35, p=.03) and HVLT (d=0.60, p=.01).
• Significant acceleration in learning was observed pre- and post-training for both AVLT (d=1.56, p<.001) and HVLT (d=3.10, p<.001).
• The trained group maintained higher recall levels throughout the study due to an immediate training boost, despite faster learning decline post-training.

Conclusions:

• Memory training effectively delays the worsening of memory span in older adults.
• Cognitive training significantly boosts the learning component of memory.
• Results elucidate mechanisms of memory enhancement and provide long-term data on training impacts.