Technique · Hooked
Endowed progress that credits real steps
Start new users partway along a setup checklist by crediting things they have really done (account created, email confirmed), show the single next step, and make each step deliver value to the user, not just data to the company.
Plain label: a head start you actually earnedAlso known as: progress bar, profile strength meter, setup checklist, head start, goal gradient, endowed progress
How it works
People work harder to finish a goal they believe they have already started, and effort speeds up as the finish line nears. Crediting genuine early actions creates that sense of a head start without inventing progress.
Evidence warning
The book's 82% figure is a relative lift; quote the original 34% vs 19%.
No public controlled data supports the lifts often quoted for one professional network's profile meter.
What the research says
34% of car-wash cards given two free stamps were completed, vs 19% of blank cards needing the same eight washes.
Nunes & Dreze, Journal of Consumer Research, 2006
Coffee-card members bought more often as they neared a free drink.
Kivetz, Urminsky & Zheng, Journal of Marketing Research, 2006
Before you start
- Each credited step is a real user action that delivers value
How to build it
- Web
- A setup checklist that opens at 2 of 6 for steps already done, with the next step highlighted.
- B2B
- Workspace setup progress that credits the imported data and the invited teammate.
- Mobile
- A profile meter that rises visibly with each step and has no step that only gathers data for ads.
What can go wrong
- Crediting steps the user never took.
- A finish line that keeps moving.
- Steps that only extract personal data.
Pairs well with
- Point the checklist at the Habit Path step.
- Ask for the investment after the first reward.
In practice
Where it shows up
LinkedIn · 2012
LinkedIn: the profile strength meter
No public controlled data on the meter's effect on profile completion; the percentages that circulate online are unsourced and should not be cited. In Feb 2012 LinkedIn reweighted completeness toward fields members control, such as Skills (LinkedIn blog).
M3 ×StartCase grade for the number: D. Evidence grade for the mechanism link: D.Anecdote
Limits
What we don’t claim
- The Hook Model is a practical design tool, not a validated or complete theory of behavior.Hooked, Introduction
- Left Brain and Right Brain are a metaphor for extrinsic and intrinsic motivation, not a claim about neuroscience.Actionable Gamification Ch.13, pp.342-343
Sources
Hooked · Nir Eyal
Ch.3
The endowed progress effect: how artificial advancement increases effort · Nunes & Dreze, Journal of Consumer Research, 2006
Evidence grade B. Moderate evidence: solid studies with some limits.The goal-gradient hypothesis resurrected · Kivetz, Urminsky & Zheng, Journal of Marketing Research, 2006
Evidence grade B. Moderate evidence: solid studies with some limits.
Source IDs: HK-ACT32F10F09
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
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