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Blink 3 of 8 - The 5 AM Club
by Robin Sharma
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Selling to the Old Brain summary
Patrick Renvoisé, Christophe Morin
How Neuroscience holds the Key to Influencing Your Audience
16 mins
Brief summary
Selling to the Old Brain offers insights into the psychology behind decision-making, focusing on the primal brain's role in sales. It teaches strategies to engage this instinctual part of the brain for effective persuasion.
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Selling to the Old Brain
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Key idea 1 of 5
If you want to persuade, speak to the part of the brain that actually calls the shots
Great products don’t sell themselves. You might have cutting-edge tech or a revolutionary service, but if your message doesn’t land with the part of the brain that actually makes decisions, you’ll be left wondering why your pitch fell flat. Neuromarketing shows that decisions aren’t made by logic alone – they’re driven by instinct, emotion, and survival impulses. And the part of the brain responsible for that? It’s the old brain.
The old brain, also called the reptilian brain, is the oldest part of our neural hardware. It’s been around for about 450 million years and still controls our survival instincts. It evolved long before language, logic, or even complex emotions. This brain doesn’t analyze spreadsheets or care about technical specs. What it does do is decide. It pulls the trigger on every major action, and it’s hardwired to respond to things like fear, contrast, simplicity, and emotion. That’s why trying to sell with facts alone often fails. You’re talking to the new brain – the one that processes logic – but ignoring the old brain, where the real action happens.
The human brain has three major parts: the new brain, which thinks; the middle brain, which feels; and the old brain, which decides. Most sales presentations target the first two – facts and emotions – but forget the third. That’s a mistake. Even with emotional storytelling, unless you engage the old brain, your message risks being ignored or forgotten.
So how do you talk to a brain that doesn’t understand language? You use signals it’s evolved to notice. The old brain is tuned to spot threats or rewards, so frame your offer in terms of before and after, problem versus solution, danger versus safety. Then keep it simple. The old brain doesn’t like complexity – it’s looking for clarity and relevance. Use visuals over words, because images are processed faster and more directly. And anchor your message in emotion, because emotion is the bridge between the feeling brain and the deciding brain.
This also explains why trust is such a powerful selling tool. The old brain scans constantly for risk. When you come across as confident, clear, and in control, it feels safer to say yes. But if you overload your audience with jargon or bullet points, you trigger mental shutdown. That’s not just bad messaging – it’s bad neurology. To really connect and convert, in short, you need to shift your strategy. So how do you go about that? Let’s find out!
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What is Selling to the Old Brain about?
Selling to the Old Brain (2003) explains how people make decisions using the oldest part of the brain, which is driven by emotion, survival, and instinct – not logic. It presents a set of tools to craft messages that connect with this primal decision-maker using visual cues, emotional hooks, and simple, high-contrast language. The goal is to help anyone become more persuasive by communicating in a way the brain is wired to respond to.
Who should read Selling to the Old Brain?
- Sales professionals who want more impact
- Marketers crafting persuasive campaigns
- Entrepreneurs pitching to investors or clients
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