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April 2, 2025 27 mins

“The more successful you are the more vulnerable you are to bias”. Nuala Walsh has identified 200 biases that affect all our decisions! In her book Tune In: How to Make Smarter Decisions in a Noisy World she explores how biases cloud judgment and why even smart, successful people make bad decisions. Drawing from her 30-year career in the corporate world and her behavioural science expertise, she’s created the Perimeters Framework—a practical tool to help individuals and organizations mitigate decision risk.


00:00 – Intro: The Real Risk Is Decision Risk

Bruce introduces the core theme of decision risk and welcomes guest Nuala Walsh.

01:30 – Why Nuala Walsh Chose Decision Science

Nuala shares her corporate background and what drew her to behavioural science.

04:15 – What Is ‘Decision Risk’?

Exploring why poor decision-making is often overlooked compared to economic or political risks.

05:40 – The Perimeters Framework: 10 Decision Traps

Nuala introduces her signature framework derived from 200 cognitive biases.

09:29 – Bias Bingo and Real-World Case Studies

From Trump to Theranos—how bias shows up in politics, business, and history.

12.23 – The Myth of Fast Decisions

The problem with speed over substance and the lure of decisiveness in leadership.

14:10 – Slowing Down with Decision Friction

Tactics for creating pause, using reflection, and the 5 Why’s method.

21:00 – Emotion, Fear & The Probability Test

Strategies to remove emotion and fear from high-stakes decisions.

23:15 – Regret, Self-Awareness & Long-Term Learning

How regret shapes future behaviour and why self-awareness is critical.

25:49 – Final Insights & Tools for Better Decisions

Reflection on key lessons and practical tools from Nuala’s work.


Resources & Mentions

 


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