the quality of being easily swayed by emotional or involuntary urges or by momentary desires, without weighing them rationally:Insufficient sleep may increase the potential for risk-taking by compromising decision-making and increasing impulsivity. Also im·pul·sive·ness [im-puhl-siv-nis] .

Is impulsivity a real word?

Impulsivity: Inclined to act on impulse rather than thought.

What does impulsivity mean?

: doing things or tending to do things suddenly and without careful thought : acting or tending to act on impulse. : done suddenly and without planning : resulting from a sudden impulse.