Adult age and digit symbol substitution performance: a meta-analysis

Article Abstract:

The findings of a meta-analysis of the effects of age, education, and estimated year of measurement based on scores from the Wechsler Adult Intelligence Scale and the Wechsler Adult Intelligence Scale-Revised Digit Symbol Substitution Test, is presented. The findings revealed that 86 percent of the variance in the regression model is accounted by age.

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The fate of cognition in very old age: six-year longitudinal findings in the Berlin aging study (BASE)

Article Abstract:

A study was conducted on the full-information longitudinal age gradients in 4 intellectual abilities on the basis of 6-year longitudinal changes in 132 individuals from the Berlin Aging Study. The results stated that intellectual development after age 70 varies by distance to death, age and intellectual ability domain.

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Aging and dual-task performance: a meta-analysis

Article Abstract:

The relations between dual-task effects and aging were examined through a meta-analysis of some studies using latency as the dependent measure and some studies focusing on accuracy. Brinley plots and state traces were derived, and a model to explain different types of complexity was developed.

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