Telephone Interview and Mail Questionnaire Applications of the Randomized Response Model

Randomization devices and methodologies for self-administered mail questionnaire and telephone interview applications of the randomized response method are described. The results of field tests of both techniques indicate that if the serious problems of nonresponse and failure to follow instructions can be overcome, the techniques may serve as less expensive alternatives to personal interview randomized response studies. A multivariate version of Warner's linear model is also described.