Abstract
According to Eysenck, extraverts require more external stimulation than introverts in order to maintain optimal arousal levels. Manipulation of stimulation was attempted, by markedly reducing sensory input without the S's prior expectancy, thereby minimizing the possible occurrence of differential demand characteristics. Seven measures of extraversion were used to select the final S samples. A lever-pulling task was reinforced with light and music. Extraverts had significantly higher initial and overall response rates than introverts. Predicted performance decrements and reminiscence were not manifested. Findings concerning extraverts' higher need for stimulation were discussed in terms of Eysenck's theory, hedonic value of reinforcement, differential drives and ‘time-out’ from positive reinforcement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
