摘要: It does not require a very extensive exposure to the relevant literature appreciate apparent impossibility of defining stress rigorously (Mason, 1975a). Stress cannot be defined in terms physical properties eliciting stimulus as cognitive and emotional factors can change impact any on same person or animal (Lazarus, 1967; Mason, 1975b). is equally difficult define specific set physiological responses. Lacey (1967), for instance, has repeatedly pointed out that each “stressor” tends elicit its own automatic response pattern, while at time there tendency individuals have unique profiles. Mason (1975b), who measures gonadal, thyroidal, growth hormone, adrenal medullary insulin activity well pituitary-adrenal cortical changes, also emphasizes adaptive pattern hormone depending upon type stress. Selye’s (1974) definition nonspecific body demand (whether pleasant unpleasant) likely too broad (and restricting focus only few responses) continue useful future. Perhaps, agreement reached general statement such an organism subjected when mechanisms are taxed beyond their normal range functioning either because intensity duration required. In spite difficulty stress, may still value bracketing field concentrates consequences straining mechanisms. Certainly, Selye (1956) proven his highly productive career.