Intelligence and personality

Intelligence and personality have traditionally been studied as separate entities in psychology, but more recent work has increasingly challenged this view. An increasing number of studies have recently explored the relationship between intelligence and personality, in particular the Big Five personality traits.

General relationship

Intelligence and personality have some common features; for example, they both follow a relatively stable pattern throughout the whole of one’s life, and are to some degree genetically determined.[1][2] In addition, they are both significant predictors of various outcomes, such as educational achievement, occupational performance, and health.[3][4][5][6] The traditional view in psychology, which was that personality and intelligence should be studied as strictly separate entities, has come under scrutiny in light of modern personality research.[7]

Historically, psychologists have drawn a hard distinction between intelligence and personality, arguing that intelligence is a cognitive trait while personality is non-cognitive. However, modern psychologists argue that intelligence and personality are intertwined, noting that personality traits tend to be related to specific cognitive patterns. For example, neuroticism is a personality trait that is related to rumination and compulsive thinking about possible threats.[8] Similarly, agreeableness is a personality trait that is related to the consideration of others' mental states.[9] The finding that IQ predicts work performance, academic achievement, and health might also point to a link between intelligence and personality, or else be grounds for further research into their relationship.[10][11]

In considering the ties between intelligence and personality, it may be worth noting that they are typically not tested in the same way. Intelligence is assessed using ability tests (such as I.Q. tests), whereas personality is assessed using questionnaires. It has been suggested that intelligence should reflect an individual's maximal performance, while personality should reflect their typical behaviour.[12]

By personality trait

Openness/Intellect

Openness shows the strongest positive relationship with g among the Big Five personality traits, ranging from r=.06 to r=.42.[13][14][15][16][17][18] Individuals with a high level of openness enjoy the experience of learning and prefer an intellectually stimulating environment. Therefore, openness shows a significant moderate association with crystallized intelligence (r=.30), but a non-significant low association with fluid intelligence (r=.08),[19] and these results are consistent with those of other studies.[20]

Some psychologists have recently pointed out that previous instruments used to measure openness actually assessed two distinctive aspects. The first is intellect, which reflects intellectual engagement and perceived intelligence and is marked by ideas, while the second is emotion, which reflects the artistic and contemplative qualities related to being engaged in sensation and perception and is marked by fantasy, aesthetics, feelings and actions.[21] On this basis, intellect was found to be associated with the neural system of the working memory, which is related to g, whereas openness was not.[22] In addition, according to a study of genetic behaviour, intellect is genetically closer to intelligence than openness.[23]

Conscientiousness

The association between conscientiousness and intelligence is complex and uncertain. Individuals with a lower level of intelligence are always assumed to tend to behave in an orderly fashion and do extra work, which is related to being conscientious, in order to compensate for their lower level of cognitive ability.[24] However, although intelligence has been observed to be negatively correlated with conscientiousness in some studies,[6][24][25][26][27] others have not found this correlation to be significant and have even found a positive relationship.[15][19]

Furthermore, some interaction has been found between conscientiousness and intelligence. Conscientiousness has been found to be a stronger predictor of safety behaviour in individuals with a low level of intelligence than in those with a high level.[28] This interaction may also be found in educational and occupational settings in future studies. Therefore, relatively speaking, an increase in either conscientiousness or intelligence may compensate for a deficiency in the other.

Extraversion

The results of a meta-analysis research conducted in 1997, which consisted of 35 studies, indicated that there is a very small, but statistically significant positive correlation between extraversion and g (r=.08).[19] Another recent meta-analysis of extraversion, which comprised 50 new studies, reported a similar correlation (r=.05).[29]

There are some moderating variables in the relationship between extraversion and g including differences in the assessment instruments and samples’ age and sensory stimulation; for example, no meaningful correlation was found between extraversion and intelligence in the samples of children.[30][31] Furthermore, Bates and Rock (2004) used Raven’s matrices and found that extraverts performed better than introverts with increasing auditory stimulation,[32] whereas introverts performed best in silence. This result is consistent with that of Revelle et al. (1976).[33] In addition, different measures and different sub-traits of extraversion have been found to cause significantly different correlations.[29]

Neuroticism

Neuroticism has been found to have a reliable negative association with g(r=-.33).[19] However, other researchers have recently reported a lower coefficient of .09 for general mental ability and emotional stability.[26] Although these studies have some differences, they all indicate that intelligence increases with a decrease in negative emotion.

One of the reasons for this negative correlation is Test anxiety, which refers to the psychological distress experienced by individuals prior to, or during, an evaluative situation.[34] This is closely associated with neuroticism [35] and has a negative influence on individuals’performance in an intelligence test (r=-.23).[36]

Some argue that all the aforementioned evidence indicates that neuroticism is related to test performance rather than true intelligence. However, according to the results of a longitudinal study recently conducted by Gow et al., (2005), neuroticism influences an age-related decline in intelligence and there is a small negative correlation between neuroticism and a change in the level of IQ (r=-.18).[37] Although it is still debatable if neuroticism reduces general intelligence, this study provided some valuable evidence and a direction for research. In addition, some interaction between intelligence and neuroticism has been found. Individuals with a high level of neuroticism demonstrated a poor performance, health, and adjustment only if they had a low level of intelligence.[38] Therefore, intelligence may act as a buffer and compensate neuroticism in individuals.

Agreeableness

No significant association between agreeableness and g has been found in previous research.[19][26] However, some components of agreeableness have been found to be related to intelligence. For example, aggression is negatively associated with intelligence (r is around -.20) [19][39][40] because unintelligent people may experience more frustration, which may lead to aggression [41] and aggression and intelligence may share some biological factors.[42] In addition, emotional perception and emotional facilitation, which are also components of agreeableness, have been found to be significantly correlated with intelligence.[43][44] This may be because emotional perception and emotional facilitation are components of emotional intelligence and some researchers have found that emotional intelligence is a Second-Stratum Factor of g.[45]

References
  1. Caspi, A. (2000). "The child is father of the man: personality continuities from childhood to adulthood". Journal of Persona and Social Psychology. 78 (1): 158–172. CiteSeerX 10.1.1.589.3665. doi:10.1037/0022-3514.78.1.158.
  2. Deary, I. J.; Whalley, L. J.; Lemmon, H.; Crawford, J. R.; Starr, J. M. (2000). "The stability of individual differences in mental ability from childhood to old age: follow-up of the 1932 Scottish Mental Survey". Intelligence. 28 (1): 49–55. doi:10.1016/s0160-2896(99)00031-8.
  3. Barrick, M. R.; Mount, M. K. (1991). "The Big Five personality dimensions and job performance: A meta - analysis". Personnel Psychology. 44: 1–26. doi:10.1111/j.1744-6570.1991.tb00688.x.
  4. Calvin, C.; Batty, G. D.; Deary, I. J. (2011). Cognitive epidemiology: Concepts, evidence, and future directions. Oxford:Wiley–Blackwell.
  5. Kern, M.; Friedman, H. (2011). Personality and health. Oxford:Wiley–Blackwell.
  6. Poropat, A. (2009). "A meta-analysis of the five-factor model of personality and academic performance". Psychological Bulletin. 135 (2): 322–338. doi:10.1037/a0014996. hdl:10072/30324. PMID 19254083.
  7. Kaufman, S. B. (April 21, 2014). "How Does IQ Relate to Personality?". Scientific American.
  8. Nolan, S. A.; Roberts, J. E.; Gotlib, I. H. (1998). "Neuroticism and ruminative response style as predictors of change in depressive symptomatology". Cognitive Therapy and Research. 22 (5): 445–455. doi:10.1023/a:1018769531641.
  9. Nettle, D.; Liddle, B. (2008). "Agreeableness is related to social-cognitive, but not social-perceptual, theory of mind". European Journal of Personality. 22 (4): 323–335. CiteSeerX 10.1.1.594.7750. doi:10.1002/per.672.
  10. Sternberg, R. J.; Grigorenko, E. L. The general factor of intelligence: How general is it?. Mahwah: NJ: Erlbaum. pp. 331–380.
  11. Gottfredson, L. S.; Deary, I. J. (2004). "Intelligence predicts health and longevity, but why?". Current Directions in Psychological Science. 13: 1–4. doi:10.1111/j.0963-7214.2004.01301001.x.
  12. Cronbach, L. J. (1949). "Essentials of psychological testing". Cite journal requires |journal= (help)
  13. Ashton, M. C.; Lee., K.; Vernon, P. A.; Jang, K. L. (2000). "Fluid intelligence, crystallized intelligence, and the Openness/Intellect factor". Journal of Research in Personality. 34 (2): 197–207. doi:10.1006/jrpe.1999.2276.
  14. Austin, E. J.; Deary, I. J.; Gibson, G. J. (1997). "Relationship between ability and personality: Three hypotheses tested". Intelligence. 25: 49–70. doi:10.1016/s0160-2896(97)90007-6.
  15. Austin=, A. J.; Deary, I. J.; Whiteman, M. C.; Fowkes, F. G. R.; Padersen, N. L.; Rabbitt, P.; Bent, N.; McInnes, L. (2002). "Relationships between ability and personality: Does intelligence contribute positively to personal and social adjustment?". Personality and Individual Differences. 32 (8): 1391–1411. doi:10.1016/s0191-8869(01)00129-5.
  16. Chamorro-Premuzic, T.; Furnham, A. (2008). "Personality, intelligence and approaches to learning as predictors of academic performance". Personality and Individual Differences. 44 (7): 1596–1603. doi:10.1016/j.paid.2008.01.003.
  17. DeYoung, C. G.; Peterson, J. B.; Higgins, D.M. (2005). "Sources of Openness/Intellect: Cognitive and neuropsychological correlates of the fifth factor of personality". Journal of Personality. 73 (4): 825–858. CiteSeerX 10.1.1.495.418. doi:10.1111/j.1467-6494.2005.00330.x. PMID 15958136.
  18. Furnham, A.; Chamorro-Premuzic, T. (2004). "Personality, intelligence, and art". Personality and Individual Differences. 36 (3): 705–715. doi:10.1016/s0191-8869(03)00128-4.
  19. Ackerman, P. L.; Heggestad, E. D. (1997). "Intelligence, personality, and interests: Evidence for overlapping traits". Psychological Bulletin. 121 (2): 219–245. doi:10.1037/0033-2909.121.2.219. PMID 9100487.
  20. Bates, T. C.; Shieles, A. (2003). "Crystallized intelligence as a product of speed and drive for experience: The relationship of inspection time and openness to g and Gc". Intelligence. 31 (3): 275–287. doi:10.1016/s0160-2896(02)00176-9.
  21. DeYoung, C. G.; Quilty, L. C.; Peterson, J. B. (2007). "Between facets and domains: 10 aspects of the Big Five". Journal of Personality and Social Psychology. 93 (5): 880–896. doi:10.1037/0022-3514.93.5.880. PMID 17983306.
  22. DeYoung, C. G.; Shamosh, N. A.; Green, A. E.; Braver, T. S.; Gray, J. R. (2009). "Intellect as distinct from Openness: Differences revealed by fMRI of working memory". Journal of Personality and Social Psychology. 97 (5): 883–892. doi:10.1037/a0016615. PMC 2805551. PMID 19857008.
  23. Wainwright, M. A.; Wright, M. J.; Luciano, M.; Geffen, G. M.; Martin, N. G. (2008). "Genetic covariation among facets of openness to experience and general cognitive ability " (PDF). Twin Research and Human Genetics. 11 (3): 275–286. doi:10.1375/twin.11.3.275. PMID 18498206.
  24. Chamorro-Premuzic, T.; Moutafi, J.; Furnham, A. (2005). "The relationship between personality traits, subjectively-assessed and fluid intelligence". Personality and Individual Differences. 38 (7): 1517–1528. doi:10.1016/j.paid.2004.09.018.
  25. Moutafi, J.; Furnham, A.; Crump, J. (2003). "Demographic and personality predictors of intelligence: A study using the NEO Personality Inventory and the Myers-Briggs Type Indicator". European Journal of Personality. 17: 79–94. doi:10.1002/per.471.
  26. Judge, T. A.; Jackson, C. L.; Shaw, J. C.; Scott, B. A.; Rich, B. L. (2007). "Self-efficacy and work-related performance: the integral role of individual differences". Journal of Applied Psychology. 92 (1): 107–127. doi:10.1037/0021-9010.92.1.107. PMID 17227155.
  27. Moutafi, J.; Furnham, A.; Crump, J. (2006). "What facets of openness and conscientiousness predict fluid intelligence score?". Learning and Individual Differences. 16: 31–42. doi:10.1016/j.lindif.2005.06.003.
  28. Postlethwaite, B.; Robbins, S.; Rickerson, J.; McKinniss, T. (2009). "The moderation of conscientiousness by cognitive ability when predicting workplace safety behaviour". Personality and Individual Differences. 47 (7): 711–716. doi:10.1016/j.paid.2009.06.008.
  29. Wolf, M. B.; Ackerman, P. L. (2005). "Extraversion and intelligence: A meta-analytic investigation". Personality and Individual Differences. 39 (3): 531–542. doi:10.1016/j.paid.2005.02.020. hdl:1853/9454.
  30. Rawlings, D.; Skok, M. (1993). "Extraversion, venturesomeness and intelligence in children". Personality and Individual Differences. 15 (4): 389–396. doi:10.1016/0191-8869(93)90066-c.
  31. Saklofske, D. H.; Kostura, D. D. (1990). "Extraversion–introversion and intelligence". Personality and Individual Differences. 11 (6): 547–551. doi:10.1016/0191-8869(90)90036-q.
  32. Bates, T. C.; Rock, A. (2004). "Personality and information processing speed: Independent influences on intelligent performance". Intelligence. 32 (1): 33–46. doi:10.1016/j.intell.2003.08.002.
  33. Revelle, W.; Amaral, P.; Turriff, S. (1976). "Introversion/extraversion, time stress, and caffeine". Science. 192 (4235): 149–150. doi:10.1126/science.1257762. PMID 1257762.
  34. Zuckerman, M.; Spielberger, C. D. Emotions and anxiety: New concepts, methods, and applications. New York:Wiley. pp. 57–81.
  35. Chamorro - Premuzic, T.; Ahmetoglu, G.; Furnham, A. (2008). "Little more than personality:Trait determinants of test anxiety ". Learning and Individual Differences. 18 (2): 258–263. doi:10.1016/j.lindif.2007.09.002.
  36. Wicherts, J. M.; Scholten, A. (2010). "Test anxiety and the validity of cognitive tests: A confirmatory factor analysis perspective and some empirical findings". Intelligence. 38: 169–178. doi:10.1016/j.intell.2009.09.008.
  37. Gow, A. J.; Whiteman, M. C.; Pattie, A.; Deary, I. J. (2005). "The personality–intelligence interface: Insights from an ageing cohort". Personality and Individual Differences. 39 (4): 751–761. doi:10.1016/j.paid.2005.01.028.
  38. Leikas, S.; M¨akinen, S.; L¨ onnqvist, J.E.; Verkasalo, M. (2009). "Cognitive ability×Emotional stability interactions on adjustment". European Journal of Personality. 23 (4): 329–342. doi:10.1002/per.711.
  39. DeYoung, C. G.; Peterson, J. B.; S´eguin, J. R.; Pihl, R. O.; Tremblay, R. E. (2008). "Externalizing behavior and the higher-order factors of the Big Five". Journal of Abnormal Psychology. 117 (4): 947–953. doi:10.1037/a0013742. PMID 19025240.
  40. Séguin, J. R.; Boulerice, B.; Harden, P.; Tremblay, R. E.; Pihl, R. O. (1999). "Executive functions and physical aggression after controlling for attention deficit hyperactivity disorder, general memory, and IQ". Journal of Child Psychology and Psychiatry. 40 (8): 1197–1208. CiteSeerX 10.1.1.565.303. doi:10.1111/1469-7610.00536.
  41. Lynam, D. R.; Moffitt, T. E.; Stouthamer-Loeber, M. (1993). "Explaining the relation between IQ and delinquency: Class, race, test motivation, school failure, or self-control?". Journal of Abnormal Psychology. 102 (2): 187–196. doi:10.1037/0021-843x.102.2.187.
  42. DeYoung, C. G.; Peterson, J. B.; Séguin, J. R.; Mejia, J. M.; Pihl, R. O.; Beitchman, J. H.; Jain, U.; Tremblay, R. E.; Kennedy, J. L.; Palmour, R. M. (2006). "The dopamine D4 receptor gene and moderation of the association between externalizing behavior and IQ". Archives of General Psychiatry. 63 (12): 1410–1416. doi:10.1001/archpsyc.63.12.1410. PMC 3283582. PMID 17146015.
  43. Mayer, J. D.; Salovey, P.; Caruso, D. R. (2004). "Emotional intelligence: Theory, findings, and implications". Psychological Inquiry. 60 (3): 197–215. doi:10.1207/s15327965pli1503_02.
  44. Mayer, J. D.; Salovey, P.; Caruso, D. R. (2008). "Emotional intelligence: New ability or eclectic traits?". American Psychologist. 63 (6): 503–517. CiteSeerX 10.1.1.453.6438. doi:10.1037/0003-066x.63.6.503. PMID 18793038.
  45. MacCann, C.; Joseph, D. L.; Newman, D. A.; Roberts, R. D. (2014). "Emotional intelligence is a second-stratum factor of intelligence: Evidence from hierarchical and bifactor models". Emotion. 14 (2): 358–374. doi:10.1037/a0034755. PMID 24341786.
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