“…Until recently, few studies have investigated the effect of the mode of interview in surveys of self-reported sexual behavior (Catania, McDermott, and Pollack, 1986;Turner et al, 1992Turner et al, , 1995Turner et al, , 1996aTurner et al, , 1996bTurner et al, , 1996cTurner et al, , 1997Turner et al, , 1998 in press). Most of those studies report a mode effect for some but not all sexual behaviors.…”