Robert CialdiniFounder Cialdini Institute & NYT Bestselling Author

The Salesman’s Clever Trust-Building Trick #shorts

19 Oct 2026 · 1 min

Watch on YouTube

0:31

In this brief YouTube short, Robert Cialdini explains a simple yet powerful persuasion technique: the “do something first” trick. He illustrates it with a salesman who pretends to have forgotten an item, returns to the customer’s home, and is handed a house key—a gesture that signals trust. By performing an initial, seemingly helpful action, the salesperson creates a sense of trust that makes the customer more likely to comply with the sales pitch. The exchange highlights how early, low‑cost actions can trigger reciprocity and increase the likelihood of a purchase.

What was the trick of the salesman, the job seeker, the pricey consultant?
In each instance, they did something first.
Starting with the salesman who claimed he'd forgotten something in his car.
He created a sense of trust, because who do you let back into your house by giving them your key except someone you trust?
And that made people more likely to buy what he was selling?
Yes, because he had created a mindset in them that they were dealing with a trustworthy character.