Examlex
The peak rate of pubertal change occurs at _____ years for girls and _____ years for boys.
Construct Validity
The degree to which a test or instrument measures the theoretical construct or psychological concept it intends to measure.
Population
The total number of people under consideration.
Sample
A subset of individuals from a larger population, selected for participation in a research study, meant to represent the larger group.
Cohort
A group of individuals sharing a specific characteristic, typically defined by age, who are studied over a period of time.
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