This is an interdisciplinary course that brings together Ethics (a branch of Philosophy), Developmental Psychology (a branch of Psychology), and other disciplines that may be considered relevant. It aims to examine critically the theories of ethical development that philosophers put forward as parts of their ethical theories. We will examine the ethical and developmental theories of such philosophers as Plato and Aristotle and contemporary discussions of their views. We will then examine the evidence for, or against various empirical claims and/or assumptions made within these theories. Students will be expected to play an active role in identifying empirical claims and/or assumptions in theories of ethical development, and investigating the relevant empirical evidence.