Methodologies Employed Mail Surveys Fully integrated printing, addressing and mailing of surveys. Completed questionnaires returned by Business Reply Envelopes directly to DSI. Telephone Surveys Conducted from centralized facilities utilizing CATI stations for direct data input. All training sessions conducted by DSI. Personal Interviews Appointments made and personal interviews conducted by DSI's executive staff. Focus Groups Full recruitment services. Sessions conducted by experienced moderators. Web Site Surveys DSI can tabulate and report information collected on your web site. Email Surveys DSI can email target respondents requesting them to answer surveys on our web site.