“…In so doing, the researcher infuses a sense of trust into the relationship with the recipient. Indeed, incentives in the form of gifts or, in particular, money encourage response to surveys, and are remarkably more effective when provided in advance with the mailed survey instrument than as a postpayment for participation (Church, 1993;Dillman, 1991Dillman, , 2000Dillman, Eltinge, Groves, & Little, 2002;Hopkins, Hopkins, & Schon, 1988;James & Bolstein, 1992;Kalafatis & Madden, 1995;Mizes, Fleece, & Roos, 1984;Porter & Whitcomb, 2003;Singer, 2002).…”