22 students were shown a range of graduate yearbook photographs a varying number of times for 2 seconds each. They were then asked how much out of 7 they liked each person.

Results showed that the more times they’d seen a given graduate photo, the more they liked them.

Expose the unknown within the known.

Create trust for new, unfamiliar products by sample-bundling with existing products. UK supermarket, Waitrose did this expertly when it first introduced kiwi berries, managing consumer unfamiliarity by bundling a small free sample with large packs of trusted blueberries.

This approach is known as a Foot In The Door.

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Exposure first. Behavior change second.

Reduce people’s Risk Aversion by taking a staged approach to rolling out new ideas or policies.

Instead of starting by looking to change behavior, just expose people to some introductory aspect of it, using the Spacing Effect to spread experiences out across time and environment.

Let the new become the familiar for a while before making more advanced requests of people.

Overcome your own Confirmation Bias...

...by exposing yourself to new viewpoints. Though you may not agree with all you hear, you'll develop a skill to see common ground in an increasingly-polarized world.

The persuasiveness of your opinions with others with whom you disagree will  be strengthened by empathically considering their views alongside your own.