Greg has not been making any progress toward his weight loss for the past six months. So, he and his wife draw up a formal agreement in which he states that he will meet weekly weight loss goals with the rewards for meeting these goals listed and the consequences he will incur if he does not meet his weekly goal. Greg and his wife are utilizing which of the following to help Greg lose weight?

Across developed countries, only ____ of persons in their 60s are afflicted with dementia, but the prevalence rises steeply after age 75 and reaches over ____ beyond age 85

a. 1–2%; 50% b. 10%; 25% c. 15%; 35% d. 25%; 75%

You are a very good school teacher, who is confident in your teaching ability

One day, you are instructing your class when you spy the principal standing outside the door watching you. According to social facilitation theory, the principal being present is likely to a. improve your teaching performance. b. decrease in your teaching performance. c. not change your teaching performance. d. lead to you becoming indigent that the principal would just stand silently outside the door rather than coming in to the classroom and making his or her presence known.