Social science is a science unlike natural science. There are no constant variables and no way to conduct the experiments with accuracy. To some extent social science may even be considered a pseudo-science. With no specific grounds to base the theory on, social science is difficult to conduct experiments for. The changing environment and having interaction with the subjects can always lead to a different result each time. The scientists of social science believe that underneath our uniqueness and individuality there is a constant pattern of human behaviour. We see this in everyday life, probably without even noticing it....
If we had numbers to work with in social science, then we would be able to have a hundred percent accurate result each time.

In general I do not consider social sciences to be pseudo-science, although there may be some linkage between the two. Both sciences are difficult to have a reproducible result and they both may assert claims, which are not first verified. I think it is necessary to for social science that they use there predicted result in order to conduct other experiments. As far as I know pseudo-science is not very necessary to do so.