Technique · Hooked
Rewards of the hunt with natural stopping points
Let users search for useful or interesting things where the next item is uncertain, mixing what they asked for with occasional discoveries. Build in endings: a daily drop at a set time, 'you're all caught up' markers and session summaries.
Plain label: discovery that knows when to stopAlso known as: feed, infinite scroll, daily drop, discovery feed, curiosity, mystery, rewards of the hunt, personal relevance
How it works
Anticipating an uncertain find holds attention more than a predictable one, which is why feeds and searches pull people back. The same pull lets endless feeds run past what the user intended, so a finishable unit or a scheduled drop keeps the hunt rewarding without regret.
Evidence warning
Endless autoplay feeds drew an EU preliminary finding of addictive design against one video app (Feb 2026); add stopping cues and time controls.
Random paid rewards (loot boxes, spin-to-win) correlate with problem gambling; keep chance away from money.
What the research says
Pigeons pressed far more under unpredictable reward schedules than fixed ones, and reward circuits respond most while anticipating a reward.
Skinner; Knutson (as cited in Hooked Ch.4)
How to build it
- Mobile
- A daily puzzle or insight that unlocks at a sensible hour, with quiet hours.
- Web
- Discovery grids that blend saved interests with a few new items and end with 'you're all caught up'.
- E-commerce
- New-arrival drops on a set day each week.
- B2B
- An insight card that changes per visit, with a clear 'that's all for today'.
What can go wrong
- No stopping point.
- Teasers whose payoff is empty.
- Late-night drops that disrupt sleep.
Pairs well with
- A reliable core reward first.
- Keep users in control with time settings.
In practice
Where it shows up
Match Group (Tinder, Hinge) · 2026
RoundTinder vs Hinge: variety vs investment
Q2 2026 (8-K, Aug 4, 2026): Match Group payers 13.25M, down 6% YoY; Hinge revenue up 22% YoY with monthly users up 13%; Tinder's YoY decline in daily users narrowed to 4%. Many causes; the mechanism link is our inference.
M4 ×ReturnPayCase grade for the number: A. Evidence grade for the mechanism link: D.Analyst inferenceCorrelationalPinterest · 2026
RoundPinterest: Hooked's textbook example, then and now
640M global monthly active users in Q2 2026, an all-time high, up 11% YoY and the 11th straight quarter of double-digit user growth (Pinterest release, Aug 4, 2026). About 50M in the book era. Many causes; the Hook is not claimed to have caused the growth.
M3-M4 ×ReturnCase grade for the number: A. Evidence grade for the mechanism link: D.Analyst inferenceCorrelationalTikTok · 2024
RoundTikTok Lite: paid to watch, then withdrawn
Aug 2024: the European Commission made binding TikTok's commitment to permanently withdraw TikTok Lite Rewards from the EU and not to launch any programme that circumvents the withdrawal, the first DSA case closed with commitments. No admission.
M4 ×ReturnCase grade for the number: A. Evidence grade for the mechanism link: D.Analyst inference
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.4 · Ch.7 · Intro · Ch.3
Source IDs: HK-RWD10HK-RWD11HK-RWD12HK-RWD13HK-RWD15HK-RWD16HK-RWD17HK-RWD40HK-RWD14HK-ACT17
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
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