Catecholamine secretion as a function of perceived coping self-efficacy.

Hypothesized that perceived coping self-efficacy mediates the effects of environmental events on catecholamine secretion. Differential levels of perceived self-efficacy were induced in 12 female phobic Ss, aged 19–40 yrs, through modeling. Their level of catecholamine secretion was then measured as they were presented with coping tasks in their high, medium, and low ranges of perceived self-efficacy. High perceived self-efficacy was accompanied by low levels of plasma epinephrine and norepinephrine during interaction with a phobic object, whereas moderate perceived self-inefficacy gave rise to substantial increases in plasma catecholamines. Both catecholamines dropped sharply when Ss declined tasks for which they judged themselves completely inefficacious. In contrast, dihydroxyphenyl-acetic acid was released maximally by mere apperception of task demands that Ss regarded as overwhelming their coping capabilities. After perceived self-efficacy was strengthened to the maximal level by S modeling, all of the tasks were performed without any differential catecholamine responses. (26 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)