Propensity Score Methods: Working with Natural Experiments

In the natural sciences, experimentation is understood to be at the foundation of how the work of a field is conducted. However, in the social sciences, experimentation can be more difficult. Instead of working with lasers or minerals or lab rats, we work with human beings situated in their worlds. The idea of conducting a scientific experiment on people may seem simple, but it gets difficult quickly as we start to plan it. In order to make a strong comparison, we would need individuals who are identical on characteristics that would influence how they would respond to the experiment. This is clearly a difficult task. Continue reading