The purpose of the present research is assess this potential by merging the reinterview data with public release data and analying the combined data. The paper is organized in three sections. In Section 1 the SIPP reinterview program is described in some detail. Section 2 presents a question-by-question description of response, procedural and overall interview/reinterview discrepancies. Finally, in Section 3, two classes of multivariate models are developed and estimated.