Why Did You Buy That Drink?
The Surprising Science Behind Everyday Purchases
Pre-order the book or join the waiting listExpected 9 September 2025
The thought-provoking consumer science book endorsed by leading academics from NYU, INSEAD, and Wharton, as well as industry experts from Coca-Cola to Ogilvy.
Join the waiting list below for Europe, Americas, and Asia.

Enter your email address and I, Mehdi Bouhassoune, will personally email you when the book is out. Enquire about corporate bulk orders.

Your email will only be used by the author to reach out directly
Let's connect on LinkedIn
Synopsis
Why Did You Buy That Drink? unravels the fascinating science behind our everyday purchases. We all make decisions, knowingly or unknowingly, about what to buy on a daily basis. These decisions seem insignificant–they're about sodas and paper towels–but they do hide more science than is originally apparent. This book sheds light on these hidden forces at play―from the meanings we attach to brands, the impact of timing, and how our brains filter information, to the roles our beliefs and social circles play. By diving deep into consumer research and dissecting these ordinary choices, the book invites everyday life into scientific laboratories. Why Did You Buy That Drink? challenges you to ponder over the daily battles ultimately shaping your life. It offers eye-opening insights that are set to forever alter how you view your receipts.