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Results for “Introversion, Psychological”

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PubMed1983

[Influence of personality traits on reaction performance in volunteers after a single administration of placebo, crotylbarbital and caffeine].

We examined the influence of single applications of placebo, caffeine (7 mg/kg), and crotylbarbital (2 mg/kg) on reaction and attention performance in 15 volunteers. A newly developed reaction-time apparatus permits the reaction time to be split for differentiation between initiation time and movement time. Moreover, simple and complex attention performance can be quantified. The volunteers were selected as to the dimensions of "introversion/extraversion" and "emotional lability/stability" by means of the Freiburg Personality Inventory. Labile volunteers responded to placebo faster than stables. Caffeine improved mainly the performance of introverted subjects. Crotylbarbital was without influence on the reaction time at the threshold dose applied.

Adult↗
PubMed2002

Music is as distracting as noise: the differential distraction of background music and noise on the cognitive test performance of introverts and extraverts.

Previous research has found that introverts' performance on complex cognitive tasks is more negatively affected by distracters, e.g. music and background television, than extraverts' performance. This study extended previous research by examining whether background noise would be as distracting as music. In the presence of silence, background garage music and office noise, 38 introverts and 38 extraverts carried out a reading comprehension task, a prose recall task and a mental arithmetic task. It was predicted that there would be an interaction between personality and background sound on all three tasks: introverts would do less well on all of the tasks than extraverts in the presence of music and noise but in silence performance would be the same. A significant interaction was found on the reading comprehension task only, although a trend for this effect was clearly present on the other two tasks. It was also predicted that there would be a main effect for background sound: performance would be worse in the presence of music and noise than silence. Results confirmed this prediction. These findings support the Eysenckian hypothesis of the difference in optimum cortical arousal in introverts and extraverts.

Adolescent↗
PubMed1985

Eyewitness performance in different psychological types.

A study of 112 subjects examined the performance on a complex memory task by various Jungian psychological types. Although differences did not emerge in terms of overall accuracy, they did emerge in terms of susceptibility to postevent information. Introverts and intuitives, alone and in combination, were found to be more prone to accept both misleading and consistent postevent information, rendering them more likely to be inaccurate in the first case and more likely to be accurate in the second case. A variety of explanations are considered.

Extraversion, Psychological↗
PubMed1978

Effects of extraversion, anxiety, and sex on children's verbal fluency and coding task performance.

Seventy-eight boys and 71 girls (ages eight to 18 years) were assigned to one of eight groups on the basis of scores on the Junior Esysenck Personality Inventory, the Children's Manifest Anxiety Scale, and sex of the S. The Ss were administered a simple and a complex verbal fluency task and the coding subtest of the WISC. It was found that extraverted children of both sexes did better than introverted children on both measures of verbal fluency and the nonverbal coding task. Anxiety influenced girl's performance on the more complex verbal fluency task, but did not alter boys' performance. The present findings were discussed in relation to the adult literature relating extraversion, anxiety, and verbal fluency.

Adolescent↗