... SI) effect on perceived efficacy under lower dosages, in higher doses, MI and SI supplements are perceived to be comparable in terms of efficacy. Recommendations for public policy are explored along with guidelines for supplement marketing. H1b. At high dosage levels, the difference...

...’ decision-making which is shaped by motivational and other personal factors. The study identifies the concept of perceived efficacy of such foods, a concept discussed widely in previous literature, as a subordinate aspect when compared to consumers’ consumption motivation, perceived importance...