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Measurements of adrenaline and noradrenaline excretion during inactivity and stress, and ratings of 22 personality variables were obtained for 110 subjects. Six factors were extracted by a factor analysis. Two of the factors were associated with personality variables, three primarily with catecholamines, and one with both types of variables. The ‘mixed.’ factor was tentatively interpreted as indicating that individuals with depressive tendencies respond to stressors with a relatively smaller rise in adrenaline excretion. This finding is in line with current theories concerning the role of catecholamines in affective psychoses.
Frankenhaeuser et al. (Wed,) studied this question.