Abstract
A study is described in which two postural conditions (standing, reclining) were used to induced high and low activation levels in normal Ss divided into high and low P groups ( (HP and LP). Electrodermal and heart rate (HR) measures were recorded during each of these activation conditions which included instructions, an initial rest period, a series of tones, a rtwo-flash threshold task and a final rest period. It was found that HP Ss tended to display significantly lower automatic arousability and poorer two-flash performance while undergoing the low activation (Recline) condition. There was a reliable tendency for HP Ss to evidence significantly slower recovery and rise times and to manifest significantly lower response criterion and sensory sensitivity. They also manifested a near significantly lower mean HR than LP Ss. The performance of HP and LP groups was compared to findings reported previously for schizophrenics and psychopaths for these tasks. It was posited that the performance of the HP Ss suggests that psychoticism may be more nearly akin to psychopathy than to schizophrenia.
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