The inheritance of neurotic traits: a twin study of the Middlesex Hospital Questionnaire.

The article presents a study which uses the Middlesex Hospital Questionnaire, a self-rating inventory designed to provide rapid quantification of common symptoms and traits relevant to the conventional clinical categories of psychoneurotic illness. The questionnaire provides an approximation to what would be expected at a clinical level from a diagnostic psychiatric interview. It has advantages over other questionnaires which incorporate essentially non-clinical constructs of personality functioning.