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The fight-or-flight or the fight-flight-freeze-or-fawn [1] (also called hyperarousal or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. [2] It was first described by Walter Bradford Cannon in 1915.
In evolutionary psychology, people often speak of the four Fs which are said to be the four basic and most primal drives (motivations or instincts) that animals (including humans) are evolutionarily adapted to have, follow, and achieve: fighting, fleeing, feeding and fucking (a more polite synonym is the word "mating").
Freezing behavior, also called the freeze response or being petrified, is a reaction to specific stimuli, most commonly observed in prey animals, including humans. [1] [2] When a prey animal has been caught and completely overcome by the predator, it may respond by "freezing up/petrification" or in other words by uncontrollably becoming rigid or limp.
Fear is an unpleasant emotion that arises in response to perceived dangers or threats.Fear causes physiological and psychological changes. It may produce behavioral reactions such as mounting an aggressive response or fleeing the threat, commonly known as the fight-or-flight response.
The fight-or-flight response is a biological response of humans and other animals to acute stressors. Fight or Flight may also refer to: Fight or Flight, a documentary film; Fight or Flight (2025 film), a British action film; Fight or Flight, a 1996 book documenting battles from the soldier's perspective by military historian Geoffrey Regan
Two passengers started a fistfight on a Southwest flight bound for Hawaii on Feb. 12. According to NBC News, the incident happened on a plane leaving out of Oakland, California.
WP:MEDMOS#Sections includes an "Other animals" section. Like the Sexual differentiation article, the Fight-or-flight response article could use a heading style to indicate what section is about humans and what section is about non-human animals. With this edit, you moved the title from Fight-or-flight response to Fight-or-flight response (in ...
English: A comprehensive case study covering all aspects of the F-16XL saga from its early conceptual design—including wind tunnel and ground testing, computer simulations, and program advocacy—through construction of the two prototypes and their use in both the Air Force flight demonstration effort and NASA aeronautical research. As much a ...