There has been some question whether bias reduction earned through the randomized response approach is sufficient to compensate for its inefficiency. By comparing self-reported arrests for two interview conditions (randomized response and direct question) with corresponding true scores appearing in police arrest files, a field-validation of a quantitative randomized response model was attempted. Overall, randomized response outperformed the more traditional direct-question method. Not only was there substantial reduction in mean response error, but the response error operative in the randomized response condition appeared to be random rather than systematic. A mean squared error comparison of the two conditions appears to assuage the concern over its relative inefficiency. (Author abstract)
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