The incremental validity of primacy as a predictor of everyday functioning

Area of Science:

• Cognitive psychology
• Neuroscience
• Gerontology

Background:

• Verbal memory is a key predictor of future functional deficits.
• The specific aspect of immediate free-recall influencing this relationship remains unclear.
• Serial position effects in verbal memory recall are linked to predicting Alzheimer's disease conversion in mild cognitive impairment.

Purpose of the Study:

• To investigate if serial position effects predict functional outcomes 10 years post-baseline.
• To control for demographic variables and overall cognitive scores in the prediction model.
• To determine the predictive value of primacy, middle, and recency recall for long-term functioning.

Main Methods:

• Analysis of data from 2,802 participants in the Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) trial.
• Prediction of subjective (Minimum Data Set Home Care) and performance-based (Observed Tasks of Daily Living, Everyday Problems Test) functioning at 10-year follow-up.
• Utilized multilevel modeling to assess the association between baseline serial position effects and long-term functioning.

Main Results:

• Primacy recall performance showed the most consistent association with both subjective and performance-based functioning 10 years later.
• Higher primacy recall was linked to less decline in overall functioning over the decade, particularly when measured by the Rey Auditory Verbal Learning Test.
• Middle and recency recall scores demonstrated weaker associations with long-term functional outcomes.

Conclusions:

• Serial position effects, particularly primacy, significantly predict future subjective and performance-based functional changes.
• These predictive relationships hold true even when accounting for demographic factors and global cognitive scores.
• The findings highlight the importance of primacy recall as a predictor of functional trajectories, adding to existing literature.