"In Hooked, Nir Eyal begins with the proposition that a predictable pattern tends to exist behind the use of addictive products. That may seem obvious but what is not obvious is exactly how such products build these persuasive routines. That is the scope and aim of this book.
The main idea of Hooked is derived from the “Hook Model” which explains the four steps involved in an ideally self-perpetuating habit cycle: Trigger, Action, Variable Reward and Investment.
The meat of the book subsequently devotes a section to each component of the hook model, describes the science behind how the component works, why it works, and then gives real-life examples of each component in action. These examples typically involve demonstrating how a popular app or online platform has incorporated the component successfully."
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