Arizona Woman Shares The Psychology Tip Your Bartender Is Probably Using On You To Get You To Spend More Money: ‘Using The Sullivan Nod Works Too’

May 25, 2026 - 00:16

An Arizona woman who identifies as a psychologist has shared a surprisingly simple tip for servers and bartenders looking to boost their earnings during a shift. The secret, she explains, is not about mixing a better drink or memorizing the menu. It is about a subtle psychological move known as the "Sullivan Nod."

According to the woman, the technique involves nodding slightly while a customer is ordering. This small, affirmative gesture creates a subconscious sense of agreement and trust. The customer, feeling validated, is more likely to go along with suggestions for a more expensive drink or an added appetizer. The psychologist claims that this nonverbal cue can significantly increase the final bill without the customer even realizing they have been influenced.

The trick, she notes, works because humans are wired for social reciprocity. When a server nods, it signals approval and builds rapport. The customer then feels a subtle pressure to reciprocate by being agreeable and spending more. The woman emphasized that this is not manipulation but rather a tool for building connection. She stated that using the Sullivan Nod works just as well in everyday conversations, making people feel heard and more open to your suggestions. For bartenders, it is a low-effort way to turn a simple transaction into a more profitable interaction.