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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.
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Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [ 1 ]
Youth has a certain unique quality in a person's life; it is a bridge between childhood and adulthood. Youth is a time of radical change—the great body changes accompanying puberty, the ability of the mind to search one's own intentions and the intentions of others, the suddenly sharpened awareness of the roles society has offered for later life.
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[4] [5] This theory is characterized by both definitive eras as well as transition phases, whose purpose is to facilitate a smooth transition out of one era and into the next. [5] According to his theory, various developmental tasks must be mastered as one progresses through each era; pre-adulthood, early adulthood, middle adulthood, and late ...
In the table below, the cognitive A and affective C-patterns are arranged from the middle out, where the patterns in the middle (B1-5, A1-2 and C1-2) represent the least at risk patterns (lower number in the classification) to most at risk (higher number).