Personality, arousal theory and the relationship to cognitive ability as measured by inspection time and IQ

Luciano, Michelle, Leisser, Romana, Wright, Margaret J. and Martin, Nicholas G. (2004) Personality, arousal theory and the relationship to cognitive ability as measured by inspection time and IQ. Personality and Individual Differences, 37 5: 1081-1089. doi:10.1016/j.paid.2003.11.016


Author Luciano, Michelle
Leisser, Romana
Wright, Margaret J.
Martin, Nicholas G.
Title Personality, arousal theory and the relationship to cognitive ability as measured by inspection time and IQ
Journal name Personality and Individual Differences   Check publisher's open access policy
ISSN 0191-8869
1873-3549
Publication date 2004-10
Year available 2003
Sub-type Article (original research)
DOI 10.1016/j.paid.2003.11.016
Open Access Status Not yet assessed
Volume 37
Issue 5
Start page 1081
End page 1089
Total pages 9
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract It has been suggested that the association between inspection time and intelligence test scores is mediated by personality/temperament (Howe, 1990). Personality, and in particular the trait of extraversion, has been implicated in IQ performance, and based on differential nervous system arousal, Robinson (1989) has proposed a quadratic relationship between extraversion and IQ. The aims of the present study were to investigate whether personality mediates the correlation between inspection time and IQ, and to test the prediction by Robinson that ambiverts (moderate neural arousal) would score higher on IQ tests than extraverts or introverts. 237 pairs of monozygotic and 297 pairs of dizygotic adolescent twins completed a line discrimination task to measure inspection time, the Multidimensional Aptitude Battery (IQ), and the Junior Eysenck Personality Questionnaire. Correlations between personality and cognitive measures were significant for the extraversion--IQ association, but not for any other personality dimensions, and hence no mediating role of personality in the inspection time--IQ relationship was indicated. A test of mean effects of extraversion on cognitive measures did not support Robinson's hypothesis, as introverts tended to outperform ambiverts rather than the reverse. A psychophysiological test of the association between personality and arousal was suggested for future research.
Keyword Extraversion
Eysenck's arousal theory
Inspection time
IQ
Junior Eysenck personality
Processing speed
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Brain Institute Publications
 
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