“…The positive and negative impact of payment for study participation in actual studies have been shown for survey (Coogan & Rosenberg, 2004; Doody et al, 2003; Gilbart & Kreiger, 1998; Little & Davis, 1984; Parkes et al, 2000; Perneger, Etter, & Rougemont, 1993), HIV risk reduction (Deren et al, 1994), and substance abuse studies (Festinger et al, 2005; Fry & Dwyer, 2001). The ethical debate regarding paying participants is also not new and laws and guidelines establish the concept that payment should not be coercive or undue, as has been extensively discussed (Grady, 2005; Permuth-Wey & Borenstein, 2009; Ripley, 2006). Payment practices vary for similar national studies (Grady, 2005) but little empirical data exists to determine how investigators choose payment and how IRB members review payment.…”