Reliability Analyses for the ADSI: Test-Retest and Internal Consistency
Journal of Child and Adolescent Substance Abuse, 21(3), 247-253., July 2012
Matthew J. Corrigan, Ph.D.
Department of Sociology, Anthropology and Social Work
Objective: This article reports on two separate studies of reliability
of the Adolescent Domain Screening Inventory (ADSI), test-retest and
internal consistency analyses. The ADSI has shown adequate validity,
although reliability has not been established. Methods: Study 1:
Students were recruited from two undergraduate courses (N = 29).
Participants were administered the ADSI twice, 14 days apart. Data were
analyzed using SPSS software; correlations were computed for all four
domains and the total score. Study 2: A secondary data analysis of 6,661
cases was conducted using the Scale – Reliability Analysis function in
SPSS to determine the Cronbach alpha for each domain in the ADSI.
Results: Study 1: Correlations were as follow: Total – r = .95; school –
r = .84; family – r = .85; community – r = .80; and individual/peer – r
= .95. Study 2: Alphas were as follow: .53 – school, .62 – family, .55 –
community, and .82 – individual/peer.
Conclusions: Together, these
studies provide evidence for the reliability of the ADSI.