PhD Cassie Kozyrkov

Chief Decision Scientist at Google

Expertise: Machine learning, AI, statistics, AI ethics, data science.

Education: Duke University

Cassie Kozyrkov is the chief decision scientist for Google with more than 15 years of experience in data science and statistical analysis roles. She joined Google in 2014 and has previously worked as a data science consultant and as a statistics instructor for North Carolina State University. In Kozyrkov’s current role, she focuses on all aspects of AI decision-making, combining the fields of data science and behavioral sciences. She also serves as a member on the board of advisors for SmartGift.

Kozyrkov holds a PhD in psychology and neuroscience from Duke University and a master’s in mathematical statistics from North Carolina State University.    

3 Articles

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Cassie Kozyrkov Cassie Kozyrkov
Updated on June 14, 2023

How Should Data Analysis Impact Your Decision-Making Process?

Everyone wants their thinking to be “data-driven,” but what exactly does that mean in practice? Our expert shares a primer on what statistics can and can’t tell you.

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Cassie Kozyrkov Cassie Kozyrkov
Updated on June 07, 2023

What Does It Mean to ‘Work With AI’?

As artificial intelligence has become useful for solving everyday problems, it has left the exclusive realm of research and become an applied technology. So, who gets to claim it?

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Cassie Kozyrkov Cassie Kozyrkov
Updated on June 02, 2025

Statistics: Are You Bayesian or Frequentist?

Is your statistical alignment Bayesian or a Frequentist? It all comes down to random variables. Learn more.

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