“…It appears that cognitive factors are better predictors of adherence than personal characteristics (Mann, Ponieman, Leventhal, & Halm, 2009). It has been shown that patients who believe that the treatment can have some benefits (Foster, Smith, Bosnic-Anticevich, Usherwood, Sawyer, Rand, & Reddel, 2011;Horne & Weinman, 1999), a disease can have serious consequences (DiMatteo, Haskard & Williams, 2007;Stafford, Jackson & Berk, 2008), they are susceptible to a disease (Becker, 1977), they have the ability to carry out the prescribed treatment regimen (Brus, van de Laar, Taal, Rasker & Wiegman, 1999;Dilorio et al, 2009), and those who have a positive attitude toward the treatment (Miller, Wikoff, Hiatt, 1992) and have more knowledge about diseases or health in general (Gellad, Grenard, & Marcum, 2011) adhere more to doctors' prescribed treatment regimens.…”