The power of ‘thanks’a field study that looked at 41 fundraisers at a university, all receiving a fixed salary. The director visited half of the fundraisers in person, telling them, “I am very grateful for your hard work. We sincerely appreciate your contributions to the university.” The second group received no such expressions of gratitude. What was the impact of the director’s thanks? Gino said that “the expression of gratitude increased the number of calls by more than 50 percent” for the week, while fundraisers who received no thanks made about the same number of calls as the previous week.