Start at the End: How to Build Products That Create Change by Matt Wallaert Summary

1. Design products by reverse-engineering from desired behavioral outcomes first.
2. Behavioral change hinges on balancing promoting and inhibiting pressures.
3. Use the Intervention Design Process (IDP) to ethically shift user actions.
4. Map behavioral pressures rather than directly targeting habits or choices.
5. “Why aren’t they doing it already?” uncovers critical inhibiting pressures.
6. Conduct ethical checks to ensure interventions align with user well-being.
7. Test small-scale pilots before scaling behavior-change products or services.
8. Products enable change but people ultimately choose to act differently.
9. Envision success criteria upfront to guide iterative design and testing.
10. Frame goals around identity shifts for deeper, lasting behavior adoption.
11. Avoid assumptions by validating insights through rapid experimentation cycles.
12. Apply behavioral science frameworks without advanced degrees for practical impact.

About the Author

Matt Wallaert, applied behavioral science pioneer and author of Start at the End: How to Build Products That Create Change, combines academic rigor with real-world execution. A former Microsoft Director of Behavioral Science and Clover Health’s inaugural Chief Behavioral Officer, Wallaert’s work bridges technology and human behavior, focusing on product design that drives measurable behavior change.

His book distills two decades of experience into actionable frameworks for building purpose-driven products, emphasizing strategy, insights, and impact evaluation.

Wallaert’s expertise is showcased through high-profile talks at the United Nations and SXSW, alongside equity-focused projects like GetRaised, which secured $3.6B in salary increases for underpaid women. As CXO at Oceans, he expands global job access, reinforcing his commitment to systemic change.

Known for blending humor and science in initiatives like the MediocreWhiteMen research, his approach democratizes behavioral science for professionals at all levels. Start at the End has become a cornerstone for product teams and executives, praised for its accessible, Ph.D.-free methodology to creating lasting impact.

FAQs About This Book

What is Start at the End by Matt Wallaert about?

Start at the End offers a behavioral science-backed framework for designing products and services that drive meaningful behavior change. The book teaches readers to begin by defining specific desired actions ("behavioral outcomes"), then reverse-engineer solutions using strategies like removing barriers, increasing motivation, and leveraging social dynamics. It blends academic theory with real-world examples from Wallaert’s work at Microsoft, Clover Health, and startups.

Who should read Start at the End?

This book is ideal for product managers, entrepreneurs, and behavioral science enthusiasts seeking actionable methods to influence user behavior. It’s particularly valuable for professionals in tech, healthcare, or social impact sectors aiming to bridge the gap between academic research and practical implementation.

Is Start at the End worth reading?

Yes, for its practical, step-by-step approach to behavior change. Readers praise its accessible tone and concrete frameworks, though some note the second half’s case studies feel repetitive. It’s recommended for those new to applied behavioral science, but less groundbreaking for experts.

What is the "IDP framework" in Start at the End?

The IDP (Identify, Design, Prove) framework guides users to:

1. Identify target behaviors through research.
2. Design interventions using behavioral principles like friction reduction.
3. Prove impact via rigorous testing.

Wallaert emphasizes iterative testing and avoiding assumptions about user motives.

How does Start at the End compare to Nudge by Thaler and Sunstein?

While both books focus on behavior change, Start at the End prioritizes product design over policy. Wallaert’s approach is more tactical, with structured workflows for corporate teams, whereas Nudge explores broader choice architecture. The books complement each other for theory-to-practice learners.

What are key real-world applications of the book’s principles?

Examples include:

• Reducing patient medication nonadherence by simplifying prescription workflows (Clover Health).
• Increasing salary negotiation rates among women via GetRaised.com’s goal-setting tools.
• Improving tech adoption by aligning features with users’ unconscious habits.

What criticism has Start at the End received?

Critics argue the book’s informal tone occasionally undermines its authority, and its case studies lack depth compared to academic papers. Some behavioral science veterans find the core concepts familiar, though newcomers appreciate the consolidation of ideas.

How does Matt Wallaert’s background shape the book?

Drawing on 20+ years as an industry practitioner (Microsoft, startups), Wallaert focuses on scalable, business-driven solutions rather than pure theory. His experience as Chief Behavioral Officer at Clover Health provides healthcare-specific examples rare in behavioral science literature.

What is a "behavioral statement" in Start at the End?

A behavioral statement clearly defines who should do what under specific conditions (e.g., "First-time users will complete profile setup within 24 hours of signing up"). These statements anchor product development to measurable actions rather than vague goals.

How relevant is Start at the End in 2025?

With AI and personalized tech dominating product design, the book’s human-centered focus on intrinsic motivation (vs. algorithmic manipulation) remains timely. Its ethical framework for behavior change aligns with growing demand for responsible AI.

Can Start at the End help nonprofit organizations?

Yes—its cost-effective research methods (e.g., lightweight surveys, A/B testing) suit resource-constrained teams. The book’s emphasis on "small changes, big impact" is particularly applicable to community-driven initiatives.

What quotes summarize Start at the End’s philosophy?

• "Behavior is the only metric that matters."
• "Don’t ask people what they want—watch what they do."

These emphasize action-oriented design over self-reported data.