Hook Model

A four-step process companies use to hook users and form habits among them. The four parts of the model include: trigger, action, investment and variable reward.

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How to Manufacture Desire
UX Magazine
What is the Hook Model? How does it work?
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The Hook Model: a summary
Daily Bits Of
How To Use The Hook Model For Building Great Products
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Harvard Business Review
Hooks: An Intro on How to Manufacture Desire
Nir and Far