[Relationship between physique and measured intelligence level in mentally retarded children].

The purpose of the present study conducted between 1979 and 1981, is to examine the relationship between body size (standing height, sitting height, body weight, and chest circumference) and measured intelligence level (MIL) of AAMD in 618 mentally retarded children between the ages of 9 and 17. Japanese boys and girls measured by the Ministry of Education in 1979 were used as the intellectually normal control group. The mean standing and sitting heights of the mild level 12 to 14 year old males were significantly higher than those of the severe-profound level males as measured by the Scheffé method. The four body-size means of the severe-profound level males and the mild level females between the ages of 9 and 17 were significantly lower than those of the normal males and females. The mean standing and sitting heights of the moderate level females were significantly lower than those of the normal children. It was concluded that there is no linear relationship between body size and MIL in females.