Examlex
____ refers to the truthfulness of a method-if a research method measures what it claims to measure.
Menarche
The first occurrence of menstruation in a female, marking the onset of reproductive capability.
Puberty
A developmental stage in humans marking the onset of sexual maturity and physical growth.
Body Fat
The portion of the human body composed of fat tissue, important for energy storage, insulation, and protection of organs.
Erik Erikson's Theory
A psychoanalytic theory of psychological development comprising eight stages from infancy to adulthood, with each stage presenting a crisis that must be resolved.
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