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​As we celebrate our 5th anniversary, we're proud of our commitment to working closely with brands, helping them adapt to a fast-changing business landscape.

Join us on a journey of discovery and transformation. Together, let's create the future of your brand.


Research that Matters


We’ re Sentinus, an Istanbul based research design firm. 

We’ re a culture of feelers who are dedicated to increasing the brand values of companies in order to make them stand out from the competition with human focused insights and strategies through a variety of qualitative research services.

                        “Where wisdom reigns, there is no conflict between thinking and feeling.”                                           Gustav Jung 


Home: Welcome


Research largely means going out into the real world and spending lots of time with people to gain full understanding of their priorities, motives, emotions and values .

Because understanding people in-depth leads to consumer-informed insights.

Consumer-informed insight leads to products, services, experiences and solutions that have true meaning and answer true needs.

Thus we promise that our clients are able to create relevant businesses, build valuable customer relationships and ultimately develop new experience strategies for the future.

Home: About


We design qualitative research which creates bridges between the rational and the emotional; the conscious and the subconscious; the personal and the collective.
Our research methodologies enable us to get closer to a problem, to draw insights from the human experience, to create tangible ideas and to deliver authentic solutions iteratively and rapidly.

"We should not pretend to understand the world only by the intellect; we apprehend it just as much by feeling. Therefore, the judgment of the intellect is, at best, only the half of truth, and must, if it be honest, also come to an understanding of its inadequacy" Carl Gustav Jung

White Flowers
Ceramic Collection
Plants on the Window


In-depth Interview 
In-home Visit
Extreme Interview
Focus Group Discussion 
Friendship Dyads and Triads
User Diary
Digital qual


In-depth Interview 
Online In-depth Interview


Analogous Experience

Empathy Experience

Ethnographic Observation

Guerrilla Research

Home: Services


Advertising Testing
Concept Sorting and Testing 
Name Testing 
Packaging Testing
Product Testing

Brand Image
Corporate Image
Customer Experience and Satisfaction

Usage and Attitude
Insight and Idea Generation

Home: Testimonials
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"Ideas are not just counters used by the calculating mind; they are also golden vessels full of living feeling."   


Carl Gustav Jung 

We drove our inspiration from the mythological god of emotions: Sentinus. Sentinus in mythology is the god who awakens and watches over the senses of the newly born. 

As psychologists, we know that emotions are at the core of the human experience. Our driving passion in founding Sentinus is to understand Turkish consumers as real “human beings” with their emotions and thoughts. 

More than 20 years, we've been personally working closely with brands in order to create solid insights and strategies that will help them transform the way they do business. We've been eager to learn, open to new ideas and adaptable to the fast-changing and increasingly complex business environment. 

From our inception in 2019, we as Sentinus are ready to tackle any challenge and help you develop strategies for not only sustaining success, but thriving in the future. 

Home: About


Where the Passion Begins

Home: Team
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She has had her BA in psychology from Bogazici University in 1992 and her MA in Gender Studies from Istanbul University in 1999.

She was trained as a self psychologist by the Anatolian Psychoanalytic Association in collaboration with the Chicago Psychoanalytic Association and as a psycho-drama co-therapist by Istanbul Psychodrama Institute.

She had worked with GfK Turkey team between 2000-2018. 

She is specialized in brand image, concept development, life style research and corporate reputation. She has carried out more than thousand focus groups, in-depth interviews, in-home visits and also run workshops for a wide range of sectors such as FMCG, communication, retail, finance, insurance, IT, cosmetics, media, transportation, jewelry, pharmaceutical , automotive, baby nutrition and tobacco.

Frequently worked clients are Ferrero, PG, Unilever, Nestle, Spinach, Dr. Oetker, Quantum, Pernod Ricard, Mastercard, ING Bank, Akbank, Denizbank, Borusan Otomotiv, Karcher, Vodafone, De Facto, Estee Lauder, PVH, Rönesans Holding, Eczacıbası.

Her book: Freud and Sexism has been published by Agora Publishing Company in 2016. 

"Mahan is a strategic thinker and a highly experienced and skilled qualitative researcher. Her moderation is sophisticated and she is a strong research partner. We have collaborated for over 10 years across many different kinds of fmcg work and, aside from her creative thinking and perceptive analysis, Mahan is highly attuned to cultural influences, which enables a deeper level of understanding of Turkish consumers"

Lucy Morris, Founder of Spinach 


From our clients

Since our establishment in May 2019, we have helped our customers find solutions to organizational challenges. Read on if you're wondering what our customers say about working with us.

I’ve worked with Mahan, Yesim and Songül for over 10 yrs and they are our go-to research partners in Turkey because of their excellence in project delivery across all aspects. Sentinus is a dream team because they combine highly skilled moderation with accurate recruitment and strong project co-ordination. They are always infecting us with their cultural knowledge which helps us get closer to Turkish people and understand their wider influences. It’s rare to find a passionate company who go beyond expectations and truly value partnership. They make us feel at home and their collaboration means we get to deeper consumer truths and enjoy the journey along the way!

Lucy Morris, Founder

I have worked closely with Mahan, Yeşim and Songül on a number of fast-paced and multi-stage international projects and their excellence in project delivery is unmatched, and as a result they have become our go-to partner for projects in the Turkish market.

Mahan is an expertly skilled moderator who is genuinely a joy to watch - as a researcher it can be nerve-wracking to hand over the reins to someone else, but I have complete confidence in Mahan; she approaches each project with passion and excitement, and is able to get to the heart of the Turkish consumer’s needs. The cultural knowledge and strategic recommendations she’s provided us with have been invaluable to the success of our projects and delivering actionable insights to our clients.

Hannah Tales, Research Manager


Home: Facility


Our field services enable us to respond quickly and flexibly to any research requirement.

In line with our clients' needs, we have the capacity to provide studios across Turkey; easily accessible from major airports and interstates, conveniently located near an abundance of restaurants, accommodations and shopping.

Home: Contact


Engage with us and find how our services can benefit your company.

Istanbul, Turkey

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