ABSTRACT
PERSONALITY differences are as pronounced among men and women in the subnormal IQ range as among normal or above-normal people, and these differences may play a decisive role in determining whether a given subnormal patient may have to spend his or her whole life in an institution, or will be able to leave and lead a more or less normal, self-supporting life. There is some evidence that the personality factors most relevant to adjustment of this kind are extraversion-introversion and neuroticism-stability (Eysenck, 1960e) and it seemed desirable to develop a measuring instrument for subnormals in order to make possible further research in this field. It is intended for subnormal subjects with IQ's between 50 and 80 who are hospitalized in institutions for the mentally subnormal; it is possible though perhaps unlikely that the norms collected from such patients may be applicable also to subnormals of similar IQ outside an institution, and without further research into this question use of the test should be restricted to hospitalized populations only.
