Jake brings his xbox home over winter break and leaves it there, thinking he will study more in the spring without it around. jake is: multiple choice trying to compensate for the time-inconsistency of his desire to study more, but temptation to play video games instead. forcing his behavior to match economic theory. not acting rationally, since what he really wants is to play games all day. demonstrating that he has forgotten the fungibility of money.

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: