ISBN-13: 9786205234181 / Angielski / Miękka / 136 str.
The recognition that subnormal intelligence is composed of two distinct categories that may overlap is of the utmost priority. In one case, subnormality results from a certain pathological condition of the brain that impedes normal development and is properly termed "mental deficiency". Mental retardation designates what should be reserved for individuals who function below their level of potential capacity, usually rather than an organic malady affecting the central nervous system.