The Four Types of Lies, According to Psychology

Not every lie weighs the same. Psychology classifies four types, and the most dangerous of them is not what it seems.

Social and utilitarian: the lightest

Social lying exists to avoid trivial annoyances, the automatic "I'm fine" of those who don't want to explain their day. The utilitarian lie seeks a concrete advantage, a specific gain. Both are uncomfortable, but they do not corrode those who say them.

Pathological: the Pinocchio type

Pathological lying is lying out of compulsion, without a real need for advantage or to avoid discomfort, the "Pinocchio type". Here the problem is no longer the content of the lie, it is the habit of lying even when the truth would cost less.

Ontological: the Dr. Jekyll and Mr. Hyde type

The most dangerous of the four is the ontological lie: denying who you really are. It's not lying about a fact, it's lying about your own identity, like the hidden double of Dr. Jekyll and Mr. Hyde. Applied to life in a concentration camp, this is the lie that threatens most: the danger of hiding from one's own existential truth, of pretending, to oneself, to be someone that one no longer is, or never was.

Why ranking matters

Looking at the four types side by side reveals a scale: from the lie that only protects a conversation to the lie that devours the very identity of those who support it. It's the same question that runs through the triple dimension of the human being, body, psyche and spirit: when the spirit chooses to lie about itself, it is the deepest part of the human being that is compromised.

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Frequently asked questions

What are the four types of lies?

Social (to avoid trivial annoyances), utilitarian (to obtain advantages), pathological (lying out of compulsion, the "Pinocchio type") and ontological (denying who you really are, the "Dr. Jekyll and Mr. Hyde type").

What is the most dangerous type of lie?

The ontological. It's not lying about a fact, it's lying about who you are. It is the lie that separates a person from their own existential truth, like the hidden double of Dr. Jekyll and Mr. Hyde.

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