There are no available measures that assess family interaction from a comprehensive theoretical perspective. This study reports analyses of the measurement integrity of scores from a measure developed to offer a comprehensive assessment. The preliminary version of the Family Interaction Inventory (FII) is a 24-scale instrument with 5 items per scale, resulting in a 120-item inventory that is intended to assess global dynamics of family interaction. A 10-item version of the short form of the Marlowe-Crowne Social Desirability Scale was embedded in the 120 items to assess the effects of social desirability on the FII. Subjects were 664 college undergraduates, of whom about half were male. A subgroup of 76 students took the FII twice to study test-retest reliability. Results indicate that the measure has promise, and tends to yield reliable scores. Further analyses and studies must be conducted to determine the norms based on the respondents' demographics. The test does not appear to be very sensitive to differences in gender and ethnicity. Seven tables present study data, and a 21-item list of references is included. Appendix A contains the FII. (SLD)