Social influence principles of Cialdini

7 important questions on Social influence principles of Cialdini

What are the six social influence principles of Cialdini?

Social influence is on the action level from the DAGMAR model.
  1. Social proof (validation)
  2. Commitment
  3. Reciprocation
  4. Liking
  5. Authority
  6. Scarcity

What is social proof (Cialdini)?

People tend to follow (similar) others because of need for:
  • Approval: belonging
  • Correct information


Social proof and persuasion:
  • "75% of the guests who stayed in this room reuse towels"
  • Likes, reviews

What is commitment (Cialdini)?

People do NOT like to be INconsistent.
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What are commitment/consistency based strategies?

  • Make people commit to something
  • Do a subsequent request
    • Foot in the door:
      • Small request changes self-view
      • Bigger request more likely to be in line
    • Low balling:
      • Compliance with small requist changes self-view, mentally own the decision
      • Change conditions so that initial request becomes more costly. More likely to behave in line with self-view
    • Social labeling:
      • Assigning a label to a person changes self-view
      • Asking for something in line with label

What is reciprocation (Cialdini)?

When you get something from others, you feel in debt and want to return the favor.
  • Door in the face technique
    • First big request which will be declined
    • Then small request: feels like a gift, which is reciprocated
  • That's not all!
    • Initial request is followed by adding something attractive (free samples) or reducing something less desirable

What is the role of authority (Cialdini)? How are the effects explained?

People tend to follow the expert (Milgram)
  • Heuristic: experts are usually right
  • Trust and credibility: people want to feel secure in their choices, preferring someone T&C

What is scarcity (Cialdini)? How can you explain this influence?


Opportunities seem more valuable to us when their availability is limited.
  1. Scarcity heuristic: what is unique or scarce must be good
  2. Gains/losses
  3. Resisting limitations to freedom (reactance)
    • People value their freedom; and when it is taken away they strongly want to regain it

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