Mental Age: Mental age refers to the level of cognitive functioning or intellectual ability typically associated with individuals at a certain chronological age.
Intelligence Quotient (IQ): IQ is a numerical measure derived from standardized tests that assess an individual's intelligence relative to their peers. It compares an individual's mental age with their chronological age, providing an indication of intellectual ability.
Developmental Milestones: Developmental milestones are key skills or abilities that most individuals acquire within a specific age range, serving as markers for typical development and growth.