Good question sir,

According to me major problems like

1. Problem of getting accurate response from people

2. Inappropriate tools of measurements and

3. Difficulty in generalising the results were major limitations of social science research

Dear Richard,

There are different types of limitations like methodological, researcher and structure or writing styles. Please visit mentioned below link. It will clear your doubts.

http://libguides.usc.edu/writingguide/limitations

The limitations of a research study are those characteristics of design or methodology that impacted or influenced the interpretation of the findings from your research. For instance, the method employed to establish internal and external validity.