Plain English Meaning
Acting on the first urge that comes to mind, instead of stopping to think it through.
Full Definition
A defense mechanism in which a person reacts to stress or anxiety by acting suddenly and without thinking through the consequences, often as a way to avoid dealing with the underlying problem.
Context Anchor
Seen in human behavior discussions about how students respond during training, especially when they rush an answer, a checklist step, or an in-flight decision.
Derivation
From the Latin 'impulsus,' meaning 'a push' or 'driven onward.' The word captures the idea of being pushed into action by an inner urge rather than by reasoned thought — useful in aviation, where snap reactions can override training.
Why Pilots Care
Impulsive actions can cause a pilot to skip checklists, ignore weather, or make rushed decisions that increase .