“…It has been argued that locus of control is not a motivational variable that shows desire or effort for control (Shapiro, 1996). In addition, the desire for control over one's own choices (Deci & Ryan, 1985), which has been found to be associated with the decision to use CM (Truant & Bottorff, 1999;Yates et al, 1993), may be different from an expectancy for control over outcomes (Burger, 1985;Burger & Cooper, 1979).…”