The psychophysiological basis of introversion-extraversion
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"The psychophysiological basis of in..." refers background or methods or result in this paper
...The remaining two predictions were both successful, and both were based on the construct of arousal (Eysenck, 1963, 1967; Gray, 1964b, 1967a): it is therefore on this construct that we shall concentrate for the rest of this paper....
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...…major experimental facts known about the physiological basis of introversion: (1) that the barbiturate drugs (in particular, sodium amylobarbitone) and alcohol have an extraverting effect on behaviour (Eysenck, 1967), and (2) that lesions to the frontal cortex have a similar effect (Willett, 1960)....
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...In the study of human personality, too, it is the extraverting effect of amytal in doses well short of those needed for sedation or anaesthesia which has attracted the attention of experimental psychologists (Eysenck, 1967)....
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...As far as the dimension of introversion is concerned, it appears that introverts do form conditioned responses (in particular, the conditioned eyeblink response) more easily than extraverts, but onl_v under terrain conditions (Eysenck and Levey, 1967; Eysenck, 1967)....
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...A similar dual level of explanation-psychological and physiological-is used by Eysenck (1957, 1967) to deal with introversion....
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