Adolescent Diagnostic Interview
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The authors describe precisely in the manual the content and purpose of the different scales of the instrument, as well as the target population, the scoring and norms procedures and limitations of the PEI.
Reliability estimates of the PEI were assessed (internal consistency and temporal stability) for a sample comprising individuals from different settings: drug clinic, school and juvenile offenders (N = 2,202). Internal consistency coefficients were good, as well as temporal stability coefficients (for one-week and one-month intervals).
Content validity appears to be good. The authors demonstrate convergent validity, criterion validity and Discriminant validity. Predictive validity was not assessed. Factor analysis of psychosocial scales showed a four-factor solution, and one of these accounted for 70% of the variance.
The PEI is a useful instrument for adolescent substance use and abuse assessment. It is comprehensive, well theoretically based and has good psychometric properties.
The reviewers resume the main characteristics of the ADI, and the studies on psychometrics of the instrument. They concluded that the interrater and test - retest reliability of the ADI are relatively well established, at least to a minimal degree. Also, they consider that the validity of the ADI is essentially undetermined, as well as its advantages over other diagnostic instruments available in the same area. Therefore, they suggest that the ADI could be consider as a useful clinical tool, but not be regarded as a validated research or clinical instrument.
The development of a new adolescent alcohol and other drug abuse screening scale is summarised. The personal Experience Screening Questionnaire (PESQ) is intended to meet the need for a quick, psychometrically adequate adolescent screening tool to measure the need for a comprehensive assessment. The development of the questionnaire's problem severity scale and evidence to its reliability (internal consistency) and validity are described.
Validity of adolescent self-report of alcohol and drug use and consequential effects and problems is examined. Validity is discussed in terms of its importance in research and clinical work. Also, results from a recent study about the Personal Experience Inventory (PEI) are discussed, which focused on self-report temporal stability and response bias tendencies as evidence of validity. Results indicate that the great majority of subjects gave temporally consistent reports of substance involvement and that only a small proportion of these individuals presented extreme response bias tendencies.