METHODOLOGICAL EXPERTISE AND SURVEY AREA

VERTIGO applies the most appropriate survey methods to settle your issues.

We have our own survey area and partners who share our philosophy and methods

- QUANTITATIVE STUDIES

- By telephone (CATI)

- By internet (CAWI)

- Face to face

- QUALITATIVE STUDIES

- Focus groups

- Individual interviews

Our scientific experts develop an optimum methodology before we begin. They define the gathering method, the sample size and structure, and the survey plan, approve the questionnaires and confirm the consistency of the results

Our surveys are conducted with a focus on objectivity, anonymity and confidentiality. Each study is subject to strict procedures that make it possible gathering reliable information:

- The interviewers are trained beforehand by the project manager

- Systematic monitoring of in-person interviews (by telephone call-back) and quality control of monitoring observations

- Thorough rereading of each questionnaire before information is input

- For recruiting consumers, VERTIGO conducts a search of the profiles closest to your objectives and takes all measures to discard “insincere consumers and those not accustomed to surveys.”