“…The motivational system appears critical to influencing behavioral intent, as demonstrated in some nutrition education interventions (Gribble, Falciglia, Davis, & Couch, 2003;Miller, Edwards, Kissling, & Sanville, 2002). Expectancy theory (ET), as defined by Vroom (Campbell & Pritchard, 1983;Tubbs, Boehne, & Dahl, 1993) can increase the specificity of the HAM construct of motivational system.…”