Ethical objections: Selye subjected the rats to horrific forms of treatment including, exposure to extreme and rapidly altered temperatures, heavy exercise, surgical injury and sub lethal doses of drugs. Such treatment would be regarded as unethical today and a licence would be required under the Scientific Procedures Act (1986).
Absence of psychological factors: The GAS suggests that human responses to stressors are singular, uniform and passive. Mason (1975) has argued that when we are confronted with a stressor, individuals make an assessment or appraisal of the situation. This helps determine the bodily response to a stressor and has been lent some support from the work of Symington et al (1955).
Progression: The GAS assumes a neat progression from alarm, through resistance to exhaustion, thus implying a non adaptive response to the stressor as the most likely outcome. The GAS would be improved if it took into account the possibility of adaptive responses to stressors, leading through to parasympathetic activity and homeostasis.