In a Study by Dunn and Colleagues, Students Were Given

In a study by Dunn and colleagues, students were given a sum of money and told to spend it on themselves, someone else, or make a charitable donation. They later rated their level of happiness. Which group was gave the lowest ratings of happiness?

A) Students who spent the money on a charitable donation.
B) Students who spent the money on a gift for someone else.
C) Students who spent the money on themselves.
D) None of these groups differed in happiness as money doesn't buy happiness.