The Rutgers Alcohol Problem Index (RAPI) is a 23-item, self-report measure designed to assess adverse consequences of alcohol consumption in adolescents (White and Labouvie, 1989). Prior to the development of the RAPI, existing measures included consequences that may only manifest after lengthy and chronic history of alcohol consumption among adults (e.g., medical complications, loss of employment); such problems would be less likely among adolescent alcohol users. In addition, the RAPI offers well-established and desirable psychometrics, relatively brief administration time, developmental appropriateness, and the availability of analogue measures assessing other substances (see MPI and DPI below), which will facilitate comparisons of problems across substances. Principal component analyses resulted in a unidimensional scale consisting of 23 items that were found to be as informative as the full set of 52 items and that showed high internal consistency upon initial (.92) and follow-up visits (0.93). Three-year stability coefficients for the total sample was adequate (0.40), particularly when considering that use trajectories may not yet have stabilized during adolescence. Test-retest reliability among a college-aged sample is reported to be much higher (e.g., 0.88 at
