Unity
The seventh and newest of Robert Cialdini’s principles of influence — added to the 2021 expanded edition of Influence, after Cialdini concluded he had been mistaken in treating it as merely an extension of Liking-via-similarity.
If, as a communicator, I can convince somebody that I share membership in a “we” group — a group that this person uses the term we to characterize — everything becomes easier inside the boundaries of that we-group.
Unity is not similarity
Liking-via-similarity says “we both run.” Unity says “we both belong to the same X.” The pronoun does the work — we, our, us. Shared categories that license the we-frame include:
- Family, romantic couple, household
- Region, city, country
- Alma mater, employer, professional society
- Religious community, sports fandom, cultural identity
Cialdini’s own example: he learned that Justin Timberlake and Lil Wayne are both Green Bay Packers fans (Cialdini grew up in Wisconsin). His response: “I immediately thought better of their music.” Not “they’re like me” — “they’re one of us.”
The Texas couples persuasion study
Per The PSYCHOLOGICAL TRICKS To Persuade & Influence ANYONE - Robert Cialdini & Lewis Howes (video):
Researchers brought romantic couples into the lab and asked one partner to try to persuade the other on a long-standing point of disagreement. Three approaches emerged from the recordings:
| Approach | Rough script | Result |
|---|---|---|
| Coercive | ”Do this for me — otherwise I’ll do things you won’t be happy about.” | Polarization — the recipient moved further away from the persuader’s position. |
| Rational | ”Examine the situation more closely; my position is the more reasonable one.” | Laughter, no movement. |
| Unity | ”We’ve been together two and a half years now. I’d really appreciate it if you’d do this for me.” | The only one that worked. |
No new information was added. No better logic. The unity-frame brought to consciousness that the two are a we-group — and inside we-groups, people support and compromise.
The pronoun version
A strikingly simpler implementation: just use “we / our / us” in framing the request itself. Even without an explicit relationship-recital, the pronouns activate the same we-group consciousness and raise compliance.
Cialdini’s own anecdote
A colleague, “Tim,” had data Cialdini needed to finish a report due the next day. Tim was known to be irritable. His first reply: “I can’t be responsible for your poor time management. The answer is no.”
Cialdini’s response: “Tim, we’ve been in the same psychology department now for 12 years. I’d really appreciate it if you’d do this for me.”
He had the data that afternoon. Identical request, single addition: a unity statement.
Co-creation as a unity engine
Cialdini calls co-creation the most successful marketing-loyalty strategy of the past decade. When you ask customers to help shape the next version of a product or service, they are no longer customers — they are co-creators, members of a we-group with the company. Crowdfunding (Kickstarter and similar) generalizes this: backers will pay for products they won’t see for 6–12 months because they’ve been brought inside the unit.
Single-word change: “advice,” not “feedback”
When inviting input, ask for advice rather than feedback or opinion.
- “Feedback” / “opinion” → people step back into themselves to consider their reaction.
- “Advice” → people stand next to you, psychologically, and look at the problem from your side.
Research finding Cialdini cites: people who are asked for advice rate the asker’s underlying idea more favorably than people who are asked for feedback or opinion on the same idea. Same content, different word, different mental posture.
Why Cialdini separated unity from liking
Both share a “comparable other” feel, but the social mechanics are different:
- Liking runs on similarity and affection — accumulating reasons to want to do business with you.
- Unity runs on shared identity and loyalty — there is now a unit that has interests, and your request is in the unit’s interest.
Loyalty obligates differently than affection. It survives moments when affection is thin (the irritable Tim was not feeling friendly toward Cialdini in that moment), and it generalizes across contexts.
Related
- Robert Cialdini — originator; added this principle in 2021
- Liking — the principle Cialdini formerly believed unity belonged inside
- Reciprocation — gifts inside a we-group land harder
- Commitment and consistency — group-identity commitments compound the consistency drive