mental age
noun Psychology.
the level of native mental ability or capacity of an individual, usually as determined by an intelligence test, in relation to the chronological age of the average individual at this level: a ten-year-old child with the mental age of a twelve-year-old; a mental age of twelve.
Compare
achievement age.
Origin of mental age
First recorded in 1910–15
Words nearby mental age
British Dictionary definitions for mental age
mental age
noun
psychol
the mental ability of a child, expressed in years and based on a comparison of his test performance with the performance of children with a range of chronological ages
See also intelligence quotient
Medical definitions for mental age
mental age
n.
A measure of mental development as determined by intelligence tests, generally restricted to children and expressed as the age at which that level is typically attained.