The Social Integration Scale (SIS) is intended to facilitate empirical research on the applicability of control theory to many types of adult crime, including "street crime," white collar crime, and physical assaults on spouses. There are five subscales: (1) belief (belief in law and social control); (2) commitment (psychological investment in conventional behavior); (3) involvement (behavioral investment in conventional behavior); (4) network availability (interaction with noncriminal persons and organizations); and (5) criminal peers (association with persons engaged in criminal behavior). Preliminary psychometric data based on a college student sample (340 to 359 students depending on the subscale) show a meaningful factor structure, and acceptable levels of reliability and construct validity. In addition to the full 26-item scale, there are 10-item and 5-item short forms. The alpha reliability coefficients for the short versions are low, but the validity coefficients are similar to those of the full scale. The scale is attached. (Contains 6 tables and 33 references.) (Author/SLD)