Brain activity associated with personality
- Publisher:
- The Australian Psychological Society Ltd
- Publication Type:
- Conference Proceeding
- Citation:
- Proceedings of the 2006 Joint Conference of the APS and NZPsS, 2006, pp. 455 - 459
- Issue Date:
- 2006-01
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People have long been facinated about the association between brain activity and the shaping of personaility and behaviour. Given oru interest in the brain, it is not surprising that there have been numerous studies that have investigated the relationship between personality and the properties of the brains' electrical activity. Our initial investigation between the personality trait introversion-extraversion and alpha (8013Hz) brain waves found strong differences between people who are introverted compared to those who are extraverted in terms of their frontal 8-13Hz amplitude reactivity. Extraverted persons in the sample were at least 3 times more likely to have larger amplitude in the 8-13 Hz frequency spectra. This study broadens the investigation to include personaility traits of the five-factor model using the NEO-Five-factr Inventory (NEO-FFI) and its association with resting brain activity. The NEO traits were found to explain small, though significant contributions to brain wave activity variance. The magnitude ofthese contributions was around 7% for delta wave activity and about 5% for theta wave activity.
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