Predicting development of dementia in the elderly with the Selective Reminding Test.

Area of Science:

• Neurology
• Gerontology
• Cognitive Psychology

Background:

• Dementia diagnosis often occurs late, limiting early intervention effectiveness.
• Identifying preclinical dementia markers is crucial for timely management.
• Verbal memory tests are commonly used to assess cognitive decline in the elderly.

Purpose of the Study:

• To evaluate the predictive ability of the Selective Reminding Test (SR) for dementia development in nondemented elderly individuals.
• To determine which SR memory measures are most effective in identifying individuals at high risk for dementia.
• To understand the characteristics of the preclinical phase of dementia using memory test data.

Main Methods:

• Administered the Selective Reminding Test (SR) to 385 nondemented elderly volunteers (mean age 80.4 years) in a longitudinal dementia risk study.
• Compared SR scores from 1-2 years before dementia diagnosis to established cutoff scores from a cognitively normal sample.
• Analyzed the predictive accuracy (sensitivity, predictive value) of different SR measures for dementia onset.

Main Results:

• The sum of recall and delayed recall scores on the SR Test demonstrated the strongest predictive capability for dementia.
• Sensitivities for predicting dementia were 47% for sum of recall and 44% for delayed recall.
• Predictive values were 37% and 40% respectively, significantly exceeding the base rate.

Conclusions:

• The Selective Reminding Test (SR) shows potential for predicting dementia in nondemented elderly individuals.
• Specific measures of verbal memory recall on the SR Test can identify individuals in the preclinical stages of dementia.
• Further research incorporating tests like the Fuld Object-Memory Test (OM) can enhance understanding of preclinical dementia characteristics.