👉 Door math, also known as the door-in-door technique, is a persuasion strategy that leverages social psychology principles to increase compliance. It involves making a small, initial request (the "door") that is likely to be accepted, followed by a larger, related request (the "main door"). For example, if you ask someone to try a new snack first (small request), they are more likely to agree to a larger request like buying a full-sized bag (larger request) afterward. This works because people tend to agree with the first favor they receive and feel a sense of consistency in their actions, leading them to align their behavior with the initial positive interaction.
