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1. Inclined to act on impulse rather than thought.
2. Motivated by or resulting from impulse: such impulsive acts as hugging strangers; impulsive generosity.
3. Having force or power to impel or incite; forceful.
4. Physics Acting within brief time intervals. Used especially of a force.

im·pul′sive·ly adv.
im·pul′sive·ness, im′pul·siv′i·ty n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


a type of behaviour characterized by a tendency to act impulsively or without prior reflection or thought
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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14, 2019 (HealthDay News) -- Children who meet sleep and screen time recommendations have lower levels of impulsivity, according to a study published online Aug.
Impulsivity is generally described as a tendency to act without thinking, or an inability to wait for something you want.
Recent neuropsychogical models of addiction have highlighted the contribution of impulsivity to the control of salient reward-driven responses (Bechara, 2005; Carou, Romero & Luengo, 2017; Goldstein & Volkow, 2002; Verdejo-Garcia, Lawrence & Clark, 2008).
Among individual variables, personality traits like impulsivity and sensation seeking seem to be particularly relevant.
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Impulsivity and sensation seeking are core components of addiction, prominent across all phases of the illness (1-3).
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Impulsivity includes behavioral patterns that are incompatible with the environment in place, applied to seek out excitement and pleasure, unplanned, and can lead to risky outcomes (3).
The purpose of this study was to examine differences in impulsive behaviors regarding student characteristics such as impulsivity, gender, age, ethnicity, race, college classification, living on or off campus, usage of illicit and prescription substances and personality characteristics such as introversion and extroversion to determine if there were differences in drinking behaviors among these variables within the college population.