What if the funniest part of your training was also the most memorable?
That's not a hypothetical. There's a neurological reason it happens — and it should inform your learning design.
Snickers has run the same comedic premise for over 40 years. "You're not you when you're hungry." Absurd. Sticky. Deliberate. Brands don't spend decades on a joke by accident.
Here's why it works
One leading explanation: stress hormones suppress memory, and humor dials them down. A 2014 Loma Linda University study made this concrete — participants who watched a funny video after a memory exercise recalled 44% of material. Those who sat in silence recalled 20%. Same time. Same content. Twice the retention.
But the finding that should change your next design decision comes from Kaplan and Pascoe. They compared students who learned with humor tied directly to concepts against those who learned without it. Immediate comprehension scores? Nearly identical. Six weeks later? The humor group retained significantly more.
Humor doesn't just feel good in the moment. Connected to your content, it compounds.
What this means when you're designing
The humor has to connect to the concept. That's the whole game.
Unrelated humor — the random joke, the funny stock photo, the icebreaker with no link to the content — didn't produce the retention advantage. But when a funny example illustrates a rule, the joke and the rule get encoded together. Pull one thread, you get both. That's not a nice-to-have. That's the mechanism.
This doesn't mean writing a stand-up routine. It means asking one question at each key concept: Can I make this unexpected, absurd, or amusing — and still make the point?
Here's what that looks like in practice. Imagine a compliance course where the "what not to do" scenario features a character so catastrophically overconfident he CC's the entire company on a confidential email. It's funny. It's specific. And six weeks later, your learners still remember exactly what not to do — because they remember him.
That's the difference between humor as decoration and humor as design.