Mental retardation refers to significantly subaverage general intellectual functioning which originates during the developmental period and is associated with impairment in adaptive behavior. Mental retardation refers to significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested during the developmental period. Mental retardation refers to significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested during the developmental period.
Mental retardation refers to substantial limitations in present functioning.
Mental retardation manifests before age 18. A state of incomplete mental development of such a kind and degree that the individual is incapable of adapting himself to the normal environment of his fellows in such a way to maintain existence independently of supervision, control or external support. An idiot is one who hath no understanding from his nativity. An idiot is such a person who cannot account or number, nor can tell who was his father or mother, nor how old he is, so as it may appear he has not understanding or reason of what shall be his profit or his loss. More especially, idiocy often relates to the severer forms of such mental deficiency , while children of subnormal capacity or backward development are spoken of as feeble-minded , or mentally deficient children.