Research and interpretation
Machiavellianism: meaning, traits, and behavior
In psychology, Machiavellianism describes a manipulative, self-interested interpersonal orientation. It is one of the Dark Triad traits, and it is distinct from ordinary planning, privacy, or strategic competence.
A research construct
Machiavellianism concerns a manipulative, self-interested interpersonal orientation. The term is not a clinical diagnosis and does not establish superior intelligence or planning ability.
Evaluate information and incentives
When a decision depends on someone else’s claims, check the relevant facts, interests, and terms. Ask what can be verified independently and who bears the consequences if the claim is wrong.
Keep alternatives open
Privacy, negotiation, or disagreement can have ordinary explanations. Material deception or repeated pressure deserves attention on its own evidence, without assuming a hidden personality type.
What does “Machiavellian” mean in psychology?
Calling someone Machiavellian is a stronger claim than saying they are calculating or difficult. The research term concerns an interpersonal orientation toward manipulation and personal advantage. One disagreement, a carefully prepared negotiation, or a preference for privacy cannot establish that orientation.
For a real decision, start with the conduct: what information was given, whether it can be checked, who benefits, and what happens when a reasonable question is raised. You can protect a legitimate interest without first proving a personality trait.
Is Machiavellianism a personality disorder?
It is a personality-research construct, not a standalone clinical diagnosis. A research questionnaire and an individualized clinical assessment answer different questions. The Institute’s articles and worksheets do not diagnose the reader or another person.
Continue with Machiavellianism in relationships, Machiavellian thinking, or Machiavellian leadership.
Research sources
Jones & Paulhus: author-hosted Short Dark Triad research paper
Jones & Paulhus (2014). Introducing the Short Dark Triad (SD3). Assessment, 21, 28–41.
Think through the situation in your own words.
Use a structured worksheet to clarify what happened and decide what needs verification.
Open the decision worksheet →Understand power. Govern how you use it.
Strategic awareness can serve protection, leadership, and responsible action. The Institute’s approach pairs attention to interests and incentives with Stoic themes of courage, justice, restraint, and accountability.
This is a philosophical and educational framing. It does not establish that higher scores on a Machiavellianism measure produce better leadership, ethical conduct, or safer decisions.