Reitan studied the state of intellectual functioning in myxedema by means of Rorschach testing. Three groups of patients were tested, one of neuroses, one of myxedema, and one of organic brain disease, each composed of fifteen subjects. The test results showed a general diminution in intellectual functions in myxedema as measured by the Rorschach. In general the performance fell to a level between that of the neurotics and those with organic brain damage. The specific nature of the intellectual impairment varied, resembling in some respects those of the neurotic subjects and in others resembling more the findings in patients with brain damage. The findings are relatively nonspecific with regard to the myxedematous process.