Some of the most powerful techniques employed by sociologists are those the discipline shares with central and local government agencies, social survey methods based on SAMPLING, but the popular image of sociology as exclusively based on such methods is plainly erroneous. Among the array of further quantitative and qualitative research methods widely used in sociology are: PARTICIPANT OBSERVATION and other forms of’direct observation’, in-depth INTERVIEWS, ATTITUDE SCALING, CONTENT ANALYSIS,‘documentary analysis’, SECONDARY DATA ANALYSIS (including reanalysis of OFFICIAL STATISTICS).
In a particular study, the methods chosen will depend upon a variety of considerations, including the following:
Of these, (b) is often most important, also influencing the kind of research problem which is chosen. Thus (a) and (b) are often closely interrelated. However, (c) and (d) operate as strong constraints on the choice of research methods.
Debates on the merits of quantitative and qualitative approaches can be fierce. Some researchers committed to quantitative survey methods refuse to acknowledge the strengths and validity of other methods, while others, whose preference is for direct observation, refuse to countenance quantitative techniques. However, a simple polarization of the two sets of techniques is unjustified. Denzin (1970) has suggested that, whenever possible, social research should seek to ‘triangulate’ different research methods (see TRIANGULATION OF APPROACHES). See also STATISTICS AND STATISTICAL ANALYSIS, METHODOLOGY, MATHEMATICAL SOCIOLOGY.