Tim is studying for a test. After seven consecutive hours of studying, he finds he can remember what he studied five or six hours ago, but he cannot remember what he studied just ten minutes ago. Tim's memory problems are BEST explained by ______

__________ is an interdisciplinary field that studies the ways people interact with the machines they use.

a. Artificial intelligence b. Automation science c. Human factors d. Software engineering

Research on Kohlberg's stages of moral development _______________

a. was originally conducted with a large sample of males and females b. showed that the stages tended to increase with age, but that few proceeded to Level 3 c. is based on the premise that what matters is the content of moral reasoning, not the structure d. showed that more than half of participants slipped to a lower level over time