Social psychology involves both inductive and hypothetico-deductive approaches. Experimental social psychology is primarily concerned with causes- that is, identifying the reasons why social behaviour has happened. Discursive social psychology is just about the opposite of experimental social psychology in its focus. It is primarily concerned with the way that people construct their social worlds through conversation and other forms of social discourse, and it generally adopts an inductive approach to do this. European social psychology, developed as a reaction to the extreme individualism which appeared to have developed in American social psychology after World War II. Research in social psychology poses a number of unique problems, mainly because our subject matter is not inert material but living, breathing, thinking and enquiring human beings. One of the main ethical debates in psychology as a whole, including social psychology, is the question of how we deal with past research.