// Book comparison
Decisive vs Think Again
Which should you read? A side-by-side comparison of Decisive by Chip Heath, Dan Heath and Think Again by Adam Grant.
Decisive
by Chip Heath, Dan Heath
★ 4.9/5
Think Again
by Adam Grant
★ 4.9/5
At a glance
| Decisive | Think Again | |
|---|---|---|
| Rating | ★ 4.9/5 | ★ 4.9/5 |
| Pages | 336 | 320 |
| Reading time | ~8.4 h | ~8.0 h |
| Published | 2013 | 2021 |
| Author | Chip Heath, Dan Heath | Adam Grant |
| Category | Business Psychology | Leadership |
| Publisher | — | Viking |
Choose Decisive if…
- → You're interested in business psychology.
- → You want the higher-rated book (4.9/5).
Choose Think Again if…
- → You're interested in leadership.
- → You prefer a shorter read (~8.0 hours).
- → You want the more recent perspective (2021).
Key takeaways — Decisive
- ✓ Always generate at least three options — when leadership teams catch themselves debating only "yes or no," they have already lost the most important part of the decision.
- ✓ Run premortems before major commitments: imagine the decision has failed in two years and work backward to identify what would have caused it.
- ✓ Set tripwires in advance — predefined signals that trigger a forced re-evaluation, protecting you from the slow drift of sunk-cost thinking.
Key takeaways — Think Again
- ✓ Adopt a Scientist Mindset by treating your business strategies as hypotheses that require constant testing and validation against new market data and feedback.
- ✓ Cultivate Confident Humility, acknowledging the limits of your knowledge to remain open to better ideas and more accurate strategic insights from your workforce.
- ✓ Foster a Rethinking Culture within your team by rewarding the 'courage to be wrong' and encouraging the regular questioning of established organizational best practices.
The verdict
If you want the higher-rated, more acclaimed read, start with Decisive. If you specifically need leadership, Think Again is the better fit. Both summaries are free — no signup required.
❓ FAQ
Is Decisive or Think Again better? +
Decisive has the higher reader rating (4.9/5 vs 4.9/5), but "better" depends on your goal. Decisive focuses on business psychology, while Think Again focuses on leadership. See the verdict below.
Which is shorter, Decisive or Think Again? +
Think Again is shorter (320 pages, ~8.0 hours) compared to Decisive (336 pages, ~8.4 hours).
Should I read Decisive or Think Again first? +
If you want the quicker, higher-rated read, start with Decisive. Otherwise read whichever matches your current goal — both summaries are free on BookHubs.