was generally insufficient and deficient. Now it is necessary to face the problem of screening the validity of information in the era of information explosion. Current political scientists are more and more inclined to explore political behaviour's psychological basis and attitude characteristics through experimental means. The distinctive feature of current research is that it focuses on some specific social groups, such as unmarried people, students, ethnic minorities, etc. Investigations about the general population are insufficient. Different research methods have distinct advantages and disadvantages. The disadvantages of one method cannot be compared with the advantages of another method. More and more scholars have begun to use a mixture of different methods to make up for the shortcomings of a single experimental approach. In the field of social sciences, experimental research methods need to be combined with other research methods to obtain knowledge innovation in both theory and methodology and promote the development of the discipline. See also Experimental economics Experimental psychology Psephology Public choice theory Social choice theory Issue voting References Further reading External links NYU Center on Experimental Social Science The Experiments in Governance and Politics research network Experimental Research, an organized section of the American Political Science Association Experimental social sciences