mental age

age (āj)

1. the duration, or the measure of time, of the existence of a person or object.

2. the measure of an attribute relative to the chronological age of an average normal individual.

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achievement age  the age of a person expressed as the chronologic age of a normal person showing the same proficiency in study.

bone age  osseous development shown radiographically, stated in terms of the chronological age at which the development is ordinarily attained.

chronological age  the measure of time elapsed since a person's birth.

fertilization age  the age of a conceptus defined by the time elapsed since fertilization.

gestational age  the age of a conceptus or pregnancy; in human clinical practice, timed from onset of the last normal menstrual period. Elsewhere the onset may be timed from estrus, coitus, artificial insemination, vaginal plug formation, fertilization, or implantation.

mental age  the age level of mental ability of a person as gauged by standard intelligence tests.

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mental age

n. Abbr. MA

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.

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mental age (MA),

the age level at which one functions intellectually, as determined by standardized psychologic and intelligence tests and expressed as the age at which that level is average. Compare achievement age. See also developmental age.

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age [āj]

1. the duration, or the measure of time of the existence of a person or object.

2. to undergo change as a result of passage of time.

developmental age.

achievement age a measure of achievement expressed in terms of the chronologic age of a normal child showing the same degree of attainment.

chronologic age the actual measure of time elapsed since a person's birth.

developmental age

1. age estimated from the degree of anatomical development.

2. in psychology, the age of an individual determined by degree of emotional, mental, anatomical, and physiological maturation.

gestational age see gestational age.

mental age the age level of mental ability of a person as gauged by standard intelligence tests.