Hooked: How to Build Habit-Forming Products Book by Nir Eyalpremium off white cream pages Stitched binding Matte cover local premium copy Language English Dimensions 5. 5 x 8. 26 inches Genre Business, Psychology, Technology 186 pages summary "Hooked" explores the psychology behind building habit forming products. Nir Eyal presents a model called the "Hook Model" that consists of four key components Trigger, Action, Variable Reward, and Investment. The book delves into how companies can use these elements to