Which Two Heads | Wizer Business

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The Book That Transformed How Leaders Think About Diversity and Decisions

Unlock the science of smarter decisions with Dr Juliet Bourke’s groundbreaking book:
Which Two Heads Are Better Than One?

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Available exclusively through Wizer for $24.99 (50% off).

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Why this Book Matters

Science Meets Leadership: Dr Bourke combines years of research with practical case studies to show why diverse teams consistently outperform.
Proven Impact: Leaders who adopt these principles report a 30% reduction in decision errors and a 20% uplift in innovation outcomes.
Foundation for Wizer: At Wizer, we built our Decision Profiles and recommendation engine on the science outlined in this book.

What You Will Learn

Why leaders often overestimate their decision-making ability.
The six lenses of diverse thinking (Outcomes, Options, People, Process, Evidence, Risk).
How to harness cognitive diversity for sharper strategies.
Real-world examples from business and government.
Practical steps to design teams that consistently make better choices.

About the Author

Dr Juliet Bourke is a globally recognised expert in diversity of thought and decision-making. Former Deloitte Partner and author of multiple works on inclusive leadership, her insights have shaped boardrooms, governments, and now — Wizer’s own decision-making science.