Morningness-eveningness and intelligence: early to bed, early to rise will likely make you anything but wise!
Journal/Book: Pers Indiv Differ. 1999; 27: the Boulevard Langford Lane, Kidlington, Oxford Ox5 1GB, England. Pergamon-Elsevier Science Ltd. 1123-1133.
Abstract: Research examining various psychological correlates of circadian type (also known as diurnal preference) has been, over the years, quite expansive. A notable omission within this research program would appear a systematic exploration of the relation between intelligence and morningness-eveningness. The present study redressed this imbalance, 420 participants performed two self-report inventories assessing circadian type, as well as measures of intelligence from two psychometric batteries: CAM-IV and the ASVAB. The results indicate that, contrary to conventional folk wisdom, evening-types are more likely to have higher intelligence scores. This result is discussed in relation to current theories concerning the nature of human cognitive abilities.
Note: Article Roberts RD, Univ Sydney, Dept Psychol, Sydney, NSW 2006, AUSTRALIA
Keyword(s): circadian rhythms; diurnal preference; morningness-eveningness; intelligence; working memory; processing speed; CIRCADIAN-RHYTHM QUESTIONNAIRES; PSYCHOMETRIC EQUIVALENCE; INDIVIDUAL-DIFFERENCES; SHIFT WORK; SCALE; POPULATION; GAINS; TESTS; IQ