This study investigated the relationship between extraversion and rates of acoustic startle habituation, a potential biological marker for individual differences. Personality was measured using the Eysenck Personality Questionnaire (EPQ), the Sensation Seeking Scale (SSS), and Tellegen's Multidimensional Personality Questionnaire (MPQ). Higher EPQ Extraversion and higher SSS scores were associa...

A biometrical-genetical analysis of twin data to elucidate the determinants of variation in extraversion and its components, sociability and impulsiveness, revealed that both genetical and environmental factors contributed to variation in extraversion, to the variation and covariation of its component scales, and to the interaction between subjects and scales. A large environmental correlation ...

The main personality theories are those of Cloninger (1987), Eysenck (1987), Costa & McCrae (1990) and Watson et al (1994); and the circumflex models of Wiggins (1979) and Kiesler (1982), the latter being a circular arrangement of interpersonal dispositions around the orthogonal dimensions of dominance (v. submission) and nurturance (v. hostility). Broadly, the first four models encompass three...

This work examines the association between personality dimensions (extraversion and neuroticism) and subjective well-being. Subjective well-being is associated both with extraversion and neuroticism, and currently, neuroticism is generally considered the more important. A total of 368 students from the University of Rovira i Virgili completed the Extraversion and Neuroticism subscales of the re...

For at least 2500 years, some people have been described as more bold, assertive and talkative than others. For almost equally long, this set of behaviors has been thought to have a biological basis and be socially important. Although our taxometric techniques have changed and our theories of biology are more advanced, the question of the causal basis as well as the behavioral consequences of t...

An experiment by Cohen and Horn purporting to test Eysenck's theory of extraversion is criticized on the following grounds: (a) unsuitable sample, (6) lack of proper experimental control, (c) failure to choose appropriate parameter values, and (rf) improper theoretical formulation. It is argued that the results throw little light on the nature of extraversion-introversion nor on the theory of c...

Epilepsy is one of the most common neurological disorders with a prevalence in the general population is three percent. The present study was correlational type. Statistical population of present study was all epilepsy patients of Esfahan city that 120 Temporal Lobe Epilepsy patients were selected as sample study in Alzahra hospital and epilepsy department of Masih. For data collection we used ...

Neuroticism and extraversion have been linked to the etiologies and course of anxiety and mood disorders, such that neuroticism is broadly associated with numerous disorders and extraversion is most strongly associated with social anxiety and depression. While previous research has established the broad associations between temperament and emotional disorders, less is known about the specific, ...

There is evidence from research based on self-report personality measures that schizophrenia patients tend to be lower in extraversion and higher in neuroticism than healthy individuals. Self-report personality measures assess aspects of the explicit self-concept. The Implicit Association Test (IAT) has been developed to assess aspects of implicit cognition such as implicit attitudes and implic...

Personality traits have been directly associated with happiness. One consistent finding is a strong link between extraversion and happiness: extraverts are happier than introverts. Although happy introverts exist, it is currently unclear under what conditions they can achieve happiness. The present study analyzes, generally, how the quality of social relationships and emotion regulation ability...