utility itself has high uncertainty, (interaction - coevolve, tied together; value) - update utility but with different time step (horizontal and vertical relationship) - non-rational + imperfect information (different; time consideration) PS1 “Unreturned Trays” in Transportation 1. Read Etheredge (1976). The case of the unreturned cafeteria trays: An Investigation based upon theories of motivation and human behavior. over time, particular co-evolve, 2. Write a counterpart story in transportation. • Identify one behavior related to transportation that you believe needs to be changed on the path of decarbonizing mobility. • Offer five different plausible theories that might contribute to that travel behavior. • For each explanation, offer a corresponding policy intervention. 3. 4. Choose one of the five theories and briefly describe a research design to test the theory, i.e., a research design that can prove or disapprove such a theory. Your write-up should be 3 pages in length (12 pt. font with single line spacing) and should include: • A meaningful and distinctive title • A 250-word abstract • A summary table, chart, or diagram that helps the reader visualize how your 5 explanations/theories might relate to each other and contribute to the travel behavior in question. Refer to Figure 1 and Table 1 in the Etheredge reading