One hundred 5- to 12-year-old boys referred for outpatient psychiatric evaluation were assessed for cross-gender behavior using the Child Behavior and Attitude Questionnaire (CBAQ) and the Child Game Participation Questionnaire (CGPQ), and for possible associated psychopathology using the Child Behavior Checklist (CBCL) and clinical psychiatric (DSM-III) diagnoses. On the two feminine scales of the CBAQ and CGPQ, 30 to 50% scored within defined clinical ranges. High feminine scale scorers did not have higher Total CBCL scores than lower feminine scale scorers, and scores on the feminine scales correlated minimally with scores on the CBCL broad and narrow-band behavior problem scales, except for a significant positive correlation with the Delinquent subscale. No particular clinical psychiatric diagnoses were significantly associated with high feminine scorers: however, high feminine behavior scorers tended to have more conduct problems and mixed adjustment disorders and less anxious and depressive psychopathology. Clinicians were not alert to the degree of cross-gender behavior found, perhaps due to the concomitant externalizing psychopathology and masculine behavior in these same patients.