The humane art and scientific research -- Generating the research hypothesis -- Measuring and manipulating variables -- Internal validity: why researchers value experimental designs -- The simple experiment -- Expanding the simple experiment: multiple group experiments -- Expanding the simple experiment: factorial designs -- Field experiments and withing-subject designs -- Developing ideas: critically reading research -- Causality without randomization: single-subject and quasi experiments -- Descriptive methods -- Asking questions an introduction to survey research -- Putting it all together