Why do free samples work?

Answer: Reciprocity makes people buy

Reciprocity makes people buy ✓ — Correct! Free samples exploit psychological reciprocity—when someone gives you something, you feel obligated to return the favor. After accepting a free sample, many people feel compelled to make a purchase. Samples also reduce purchase risk (try before buying), create familiarity, and demonstrate product quality. The small sample cost often generates significant sales.

Samples are better than products — Wrong. Samples are identical to regular products, just smaller portions. They work through psychology (reciprocity, reduced risk) and marketing (product trial, brand awareness), not because they're different or better than the full-size version.

People collect free items — Wrong. While some people do enjoy free samples, companies offer them to drive purchases, not for collector value. The strategy works because many recipients feel obligated to reciprocate by buying, or the sample reduces their hesitation to try the full product.