ABSTRACT
SEVERAL years ago the Eugenics Society gave their support to an investigation of the inheritance of neuroticism. This work, carried out by D. B. Prell and the present writer (1951), gave strong support to the view that hereditary factors played a vital part in determining the degree of neuroticism shown by the children taking part in our investigation. It seemed desirable to follow up this study by another in which the hypothesis was tested that extraversion and introversion were similarly determined by hereditary influences to an appreciable degree. The present paper is a brief report of such an investigation.
