2.2.2. Screening procedures
Potential participants were first screened by telephone or through an electronic questionnaire posted on SurveyMonkey.com to collect demographic and basic medical information. Potential participants were given a list of 3 snack foods (M&M's®, Lays ® plain potato chips, and Skittles®) and asked to rate each one on a 7-point Likert scale for liking (1=“Do Not Like At All” to 7=“Like Very Much”). The target food to be used during the experiment was selected on the basis of the liking score. The food with the highest score was chosen as the target food and at least one target food had to score ≥5. If more than one food was ranked with the same highest score, the experimenter selected the target food