Enhancing the Validity of Self-Reported Alcohol and Marijuana Consumption Using a Bogus Pipeline Procedure: A Meta-Analytic Review


Two separate meta-analyses were conducted to test whether the use of self-report measures within the bogus pipeline (BPL) paradigm yields more valid responses than the use of self-report measures alone for assessing alcohol and marijuana consumption. Weighted mean effect sizes (ds) of 0.01 and -0.12 were obtained for studies using alcohol and marijuana selfreports, respectively. Chi-square tests based on Ns of 1, 892 for the alcohol sample and 1, 425 for the marijuana sample indicated homogeneity of effect sizes for both data bases. Explanations for why a BPL procedure does not improve the validity of self-reported alcohol and marijuana consumption are provided. In addition, alternative methods that may enhance the validity of alcohol and marijuana self-reports are discussed. © 1995, Taylor & Francis Group, LLC. All rights reserved.

Publication Title

Basic and Applied Social Psychology