知ち能のう年ねん齢れい

noun

mental age

Psychological term for the age level at which a person functions intellectually, often compared to chronological age. Used in contexts such as intelligence testing and developmental assessment.

See also: 精神年齢

• 知ち能のう年ねん齢れいが実じつ年ねん齢れいより高たかい子こどもは、学がっ校こうで退たい屈くつしやすい。

  Children whose mental age is higher than their chronological age tend to get bored at school.