Examlex
What are the differences among young-old, old-old, and oldest-old?
Variables
Elements or factors that can change and potentially affect the outcome of a study or experiment.
Intelligence Quotient
A measure of a person's intellectual abilities in relation to an average score, usually determined by standardized tests.
Mental Age
A measure of an individual's mental ability expressed as the age at which an average individual reaches the same level of performance.
Chronological Age
The actual age of an individual as measured in years from the date of birth.
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