AP PSYCHOLOGY

Detailed explanation-1: -Hans Selye, a medical doctor and researcher, came up with the theory of GAS. During an experiment with lab rats at McGill University in Montreal, he observed a series of physiological changes in the rats after they were exposed to stressful events.

Detailed explanation-2: -Some years ago, Hans Selye postulated a general adaptation syndrome due to stress, but this concept has been of doubtful value in advancing the understanding of maladies.

Detailed explanation-3: -General adaptation syndrome (GAS) is a description of the process of how your body responds to stress. The phenomenon was first identified by a scientist named Hans Selye in 1946. 1. The easiest way to understand GAS is to view it as the different stages of stress and how your body reacts at each stage.

Detailed explanation-4: -The alarm reaction stage of general adaptation syndrome is the body’s initial response to stress. The sympathetic nervous system is activated by the sudden release of hormones. You may better know this stage as the fight-or-flight response.