Book
Eyal N. Hooked: How to Build Habit-Forming Products. New York: Portfolio/Penguin; 2014. 256 p.
Why we cite it
Describes the Hook Model — a four-step product design framework (trigger → action → variable reward → investment) used to build habit-forming products. Relevant to companions 377 (impulse buying) and 387 (food delivery apps) as a framework for understanding how food companies, grocery stores, restaurants, and delivery apps design products and environments to trigger habitual consumption. The trigger-action-reward cycle parallels Duhigg’s habit loop (chf05) but emphasises the deliberate design of these triggers by commercial interests. Not a scientific work — a product design manual drawing on behavioural psychology research.
About the author
Nir Eyal (born 1980, Israel; raised in Florida) is a behavioural design consultant and former lecturer in marketing at Stanford Graduate School of Business and the Hasso Plattner Institute of Design (d.school). BA from Emory University; attended Stanford GSB. Previously worked in video gaming and advertising industries; co-founded and sold two tech companies (Sunshine Business Development, AdNectar). Dubbed “The Prophet of Habit-Forming Technology” by MIT Technology Review. Wall Street Journal bestselling author. Over 1 million copies sold across his books. Also author of Indistractable: How to Control Your Attention and Choose Your Life (2019, with Julie Li). Not a psychologist or scientist — a product design practitioner who applies behavioural psychology to technology.
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