The Myth of the Rational Customer

The Myth of the Rational Customer

From On Brand with Nick Westergaard by Nick Westergaard

April 27, 2026 · 29 min

About this episode

Paul Larche discusses the neuroscience behind customer decision-making and how to effectively engage audiences in brand storytelling.

Most of us believe we make rational choices, but our brains are actually wired to say no before we ever get to the logic. Paul Larche, a Hall of Fame broadcaster and author of The Divided Brain, spent four decades in media before turning to neuroscience to find out why customers actually buy. He joins the show to break down the Old Brain versus New Brain metaphor and explain how leaders can stop accidentally triggering the wrong response in their brand storytelling. What You’ll Learn in This Episode Why your customer’s brain is biologically wired to say no before you ever finish your pitch How a small engine mechanic turned a twenty-year radio campaign into a local empire by ditching technical specs The two-gear metaphor for understanding how the old brain drives the bus while the new brain just rationalizes the ride Why leading with facts and figures is actually a roadblock to opening the mind of your audience How to engage critical thinking and skepticism to avoid being manipulated by AI and modern algorithms Episode Chapters (00:00) Intro (01:36) From Radio Pioneer to Neuroscience Strategist (03:45) The Toronto Blue Jays and the Power of Emotional Advertising (04:45) The Story…

People in this episode

Host: Nick Westergaard

Guest: Paul Larche

Topics covered

  • neuroscience
  • customer behavior
  • brand storytelling
  • emotional advertising
  • critical thinking

Keywords

  • rational customer
  • Old Brain
  • New Brain
  • emotional drivers
  • advertising
  • critical thinking
  • AI manipulation

Mentioned in this episode

Organizations: Toronto Blue Jays

Books & works: The Divided Brain

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