Psychologists collect data about people and do so systematically. This course will use the history of psychology and look at classic psychological experiments as a way to think about experimentation itself: how do we answer the questions we really want to ask? Historically important experiments in social, developmental, abnormal and cognitive psychology will be read and critiqued, and a few will be replicated by the class as a group. Students will be expected to write short reaction papers on the theme of historical experiments, and to design their own extensions of these classic experiments. We will also address ethical issues in psychological experimentation.