Effect of differences in suggestibility within self− and external-control conditions

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Studied possible effects of differences in waking suggestibility on performance within self- and external-control conditions. 10 high-suggestible and 10 low-suggestible undergraduate Ss, as measured by body sway, were assigned to each of 3 experimental conditions--self-control, external-control, and no reward. Response rates of self and external groups were higher than the no-reward group. However, response rates of high-suggestible Ss in the self-control condition were not significantly different than similar Ss in the no-reward groups. Moreover, performance of high- and low-suggestible Ss was not significantly different in the external-control condition, whereas response rates of high-suggestible Ss were significantly lower than low-suggestible Ss in the self-control condition. It is concluded that low-suggestible Ss respond equally well to either self- or external demands and rewards, whereas high-suggestible Ss are so dependent on external factors that their performance is minimal when self-determination of reward contingencies is required. (18 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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