DON’T FIGHT THE BRAIN

In the 1980s, psychologist John Sweller ran a study to understand how people learn best.

One group of students got a diagram with a spoken explanation.

Another group got the same diagram with written text instead.

Which group learned more?

The ones who listened rather than read.

Why?

Because the brain processes visuals and sounds differently.

A diagram and a voice – that works.

But written words and spoken words go through the same mental channel – and that creates overload.

This is what happens in many presentations.

If you speak over slides full of text, your audience can’t absorb both.

They’re forced to choose: read or listen?

They can’t do both at once.

It’s like playing two songs at the same time.

You won’t enjoy either – and you won’t remember much.

So if you want your audience to stay with you, don’t fight the brain.