Point:Reports of social change within society can involve concepts that have not been, or cannot be, tested empirically, which means that they lack scientific credibility.
Evidence:Examples of social change rest on isolated case studies (e.g. Martin Luther King) and therefore, an idiographic approach is often taken.
Explanation:Consequently, a large amount of subjective interpretation is involved in explaining the occurrences of social norms, and such evidence should be treated with caution. However, there is also a large quantity of research that supports the processes involved in social change, such as that of Asch, Milgram, and Moscovici which take a nomothetic approach, as they have each created universal laws to explain human behaviour under certain social circumstances.
Link:Taken together, these isolated case studies and relatively large-scale studies provide credibility to the underlying processes involved in social change.**