At the stages of preparation and organization of productive research specialists sociological and marketing education. On the 'field' stages welcome people with psychological or sociological education. Mathematical, statistical education is compulsory at the processing stage and primary data analysis. Final analysis and formulation of conclusions to entrust professionals with marketing, economic and business education. This 'distribution' skills in marketing study is optimal for best results. Joel and Ethan Coen can provide more clarity in the matter. If your research involves mass survey, make sure that the research agency has the necessary and transparent means for you control field stage. The most common method of quality control 'fields' is a telephone confirmation. Depending on the methodology and sample design, you need to expose your control 20-50% of the questionnaires.
Most likely, the costs for the telephone monitoring agency will impose on you – this is common practice. Whatever it was, consider how their own control phone verification. Reliable Agency record the whole process of checking on the phone audio media, which is sufficient to control their work. Strict adherence to the methodology requires the monitoring phase of the field supervisors and the 'mysterious respondents', ie dummies employees. For example, if the survey should be conducted in a particular place at a particular time with a specific interval between interviews, the supervisor secretly visits the site to oversee the work of the interviewer. Suervayzery work on conditioned schedule. You can contact the agency that schedule and control the work and saostoyatelno interviewer and supervisor, not letting agency the time and place of your visit.