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The relationship between happiness and intelligent quotient: the contribution of socio-economic and clinical factors

Ali, A; Ambler, G; Strydom, A; Rai, D; Cooper, C; McManus, S; Weich, S; ... Hassiotis, A; + view all (2013) The relationship between happiness and intelligent quotient: the contribution of socio-economic and clinical factors. Psychological Medicine , 43 (6) pp. 1303-1312. 10.1017/S0033291712002139. Green open access

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Abstract

Happiness and higher intelligent quotient (IQ) are independently related to positive health outcomes. However, there are inconsistent reports about the relationship between IQ and happiness. The aim was to examine the association between IQ and happiness and whether it is mediated by social and clinical factors. The authors analysed data from the 2007 Adult Psychiatric Morbidity Survey in England. The participants were adults aged 16 years or over, living in private households in 2007. Data from 6870 participants were included in the study. Happiness was measured using a validated question on a three-point scale. Verbal IQ was estimated using the National Adult Reading Test and both categorical and continuous IQ was analysed. Happiness is significantly associated with IQ. Those in the lowest IQ range (70–99) reported the lowest levels of happiness compared with the highest IQ group (120–129). Mediation analysis using the continuous IQ variable found dependency in activities of daily living, income, health and neurotic symptoms were strong mediators of the relationship, as they reduced the association between happiness and IQ by 50%. Those with lower IQ are less happy than those with higher IQ. Interventions that target modifiable variables such as income (e.g. through enhancing education and employment opportunities) and neurotic symptoms (e.g. through better detection of mental health problems) may improve levels of happiness in the lower IQ groups.

Type: Article
Title: The relationship between happiness and intelligent quotient: the contribution of socio-economic and clinical factors
Open access status: An open access version is available from UCL Discovery
DOI: 10.1017/S0033291712002139
Publisher version: http://dx.doi.org/10.1017/S0033291712002139
Language: English
Additional information: This article has been published in a revised form in Psychological Medicine: http://dx.doi.org/10.1017/S0033291712002139. This version is free to view and download for private research and study only. Not for re-distribution, re-sale or use in derivative works. Copyright © Cambridge University Press 2012.
Keywords: Borderline intellectual impairment, happiness and wellbeing, intellectual ability, intelligent quotient
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Statistical Science
URI: https://discovery.ucl.ac.uk/id/eprint/1367728
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