Plain English Meaning

Making up a reasonable-sounding excuse — and believing it — instead of facing the real reason something went wrong.

Full Definition

A defense mechanism in which a person unconsciously substitutes acceptable, plausible-sounding reasons for the real reasons behind their behavior, performance, or feelings, in order to protect their self-image when the true reasons would be uncomfortable to admit.

Context Anchor

Seen in aviation human behavior discussions, especially when explaining how students or pilots may protect themselves from embarrassment, fear, or responsibility.

Derivation

From the Latin 'ratio,' meaning 'reason' or 'reckoning.' To rationalize is literally to 'apply reason' — but in psychology it means inventing a reason that sounds logical rather than admitting the real one.

Why Pilots Care

Unchecked rationalization prevents pilots from learning from errors, increasing the chance of repeating unsafe behaviors.