How to capture the attention of your targets

COHDA provides all the means of gathering data which will capture the attention of your targets and obtain their participation, via its in-house contact platform or its solid partnerships with French start-ups. Human beings are at the heart of our surveys, so it is not surprising that the telephone, thanks to the quality of discussion it enables and the positive memory trace it leaves, remains the leading collection tool in our activities. However, other tools emerge naturally, for economic and/or methodological reasons.

A responsible collection strategy

Everything must be designed to be in the right place at the right time with the right tools and the right register, even if this means combining contact methods to reach our aims (e.g., online + telephone). We take particular care, however, not to over-elicit the audience(s) in question, which explains why predictive dialling and calls after 8pm are not among our practices!

Our collection methods


To reach a diverse and authentic audience, with a view to establishing close contact and a high degree of attentiveness.


For large-scale, lower cost surveys with a captive audience.

Mystery surveys

For an accurate and highly objective evaluation of service quality or a contact method (telephone, email, chat, shop or service desk, etc.).


To capitalise on the generalisation of this form of contact and to roll-out surveys at the lowest cost, plugged into your CRM or as a ‘one-shot’, this method also allows for the use of visual tools (logos, communication media).


To set up an interactive and lively conversational mode with your targets, anywhere, via brief ‘live’ questionnaires.


To steer and optimise the performance of a customer relations centre by automating post-call satisfaction feedback, in real time and continuously.


To capture technology-remote audiences (without computers or email), to provide time and freedom to respondents, or to avoid the constraints of a file.


To reach your customers, users or citizens in a specific location (in a shop, at a service desk, at home, at a tourist site, etc.) and observe a phenomenon in situ, right where it is happening.

Social media

To capture audiences where they browse and interview them on topics related to their daily lives.

“We’ve been entrusting all our surveys to COHDA for 3 years. Their expertise and advice have enabled us to accurately measure our customers’ satisfaction and thus improve our offer year after year. What’s more, their professionalism transmits an excellent image to our customers interviewed.”

— Philippe Chedru, CEO of OXYMETAL

“The COHDA team combine attentiveness and proactiveness, two essential qualities for a service provider responding to a public market.”


“COHDA stands for professionalism, attentiveness to the client and high-quality work. Each time we’ve called on them, they’ve met our requirements with efficiency and quality. I can recommend them wholeheartedly.”

— Patrick DUFOUR, Member of the Executive Board of CEAPC

“Optimal collaboration despite the distance, professionalism, proactiveness and attentiveness.”

— Lucile WEILL-BARILLET, Research Officer at ADEUS

“In 6 years of collaboration, I’m highly satisfied with COHDA’s dedicated and professional guidance. The project manager is very attentive, proactive and follows up on the file as required. We’ve built up a true relationship of trust.”

— Isabelle BAUDELET, Marketing Action Officer at UEM

“The COHDA Institute adapted perfectly to the exceptional situation of the first lockdown, in particular by implementing the necessary tools to ensure service quality.”

— CB, Statistical Studies Officer for the REGION GRAND EST regional authority

“A very serious company which demonstrates a high level of availability for its clients. COHDA has managed to meet our requirements perfectly and to adapt whenever necessary. I’d recommend COHDA without any hesitation.”

— LM , Housing Research Officer at ADIL DES BOUCHES DU RHÔNE

“A huge thanks for your involvement and proactiveness to all the team, which I have the pleasure of working with each time we call on you for a survey! Your programmer is a magician and when listening in, we were impressed by the interviewers’ professionalism in adapting to our environment.”

— Sylvie DANILO DURAN, Head of Marketing & Communication Studies at INNOVAL

Discover our profession

From the design of tailor-made tools to the collection and analysis of data, COHDA takes great pride in advising you throughout every step of the implementation of your project, in compliance with rigorous procedures ensuring quality, rapidity and security (GRDP and ethics policy, CSR, application of the ESOMAR code of conduct, etc.).

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Designing a survey device

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Data collection

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Results analysis,
presentation and advice

Proud to have worked alongside more than 250 clients

A generalist study institution, we operate in numerous sectors of activity, often with very different specificities and issues, and on behalf of major groups and small-to-medium businesses, mainly in France but also overseas.

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