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MeSH Review

Intelligence Tests

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Disease relevance of Intelligence Tests

  • Thirty children (20 girls and 10 boys, aged 6-16 years) with primary peptic ulcers, matched in paris for age, sex and socio-economic standard to a group of 30 ulcer-free controls, were submitted to a structured psychiatric interview, a structured 'present psychiatric state' examination and to personality and intelligence tests [1].
  • Previous studies consistently report that patients with multiple sclerosis (MS) perform poorly on the Picture Arrangement subtest of the Wechsler Intelligence test [2].
  • In seventy-two patients affected by hyperphagic obesity and forty age-matched, normal weight volunteers we performed a psychological assessment, through various mental tests, and evaluated the beta-endorphin (B-Ep), ACTH and cortisol circulating levels, in basal condition and following an overnight short dexamethasone suppression test (DST) [3].
  • Factors predicting mortality were, in order of importance, old age, a history of ischaemic heart disease, low mental-test score, low serum cholesterol concentration, low Glasgow Coma Score on admission, and the presence of left ventricular hypertrophy [4].

Psychiatry related information on Intelligence Tests

  • Reductions in the cortical cholinergic enzyme choline acetyltransferase were more pronounced in individuals with (80%) compared to those without (50%) hallucinations and correlated strongly with mental test scores in the group as a whole [5].
  • In the present study, we evaluated the possibility of estimating episodic verbal memory scores at the Rey Auditory Verbal Learning Test (RAVLT) from an irregular words reading task held to resist to deterioration, that is the Italian analogue of the NART, the TIB (Test d'Intelligenza Breve--brief intelligence test) [6].
  • The invention of intelligence tests in France and the publication of a book in the USA stimulated the Child Life Protection Society in Cape Town to call a meeting which led ultimately to the formation of the National Council for Mental Health. Details of early intelligence tests are given and the mental state of poor Whites is described [7].

High impact information on Intelligence Tests

  • All members of 63 families who had phenylketonuric or hyperphenylalaninaemic offspring received a phenylalanine tolerance test and an individual intelligence test [8].
  • Two other mental tests, the Trail Making B Test and the Digit Symbol Test, were also administered [9].
  • What one intelligence test measures: a theoretical account of the processing in the Raven Progressive Matrices Test [10].
  • Seven months after his ingestion of thallium, intelligence tests were performed on the patient and his non-identical twin brother, who was of similar educational background [11].
  • In this work, we tested the hypothesis that oral creatine supplementation (5 g d(-1) for six weeks) would enhance intelligence test scores and working memory performance in 45 young adult, vegetarian subjects in a double-blind, placebo-controlled, cross-over design [12].

Chemical compound and disease context of Intelligence Tests

  • No direct linear association was shown between neonatal bilirubin levels and intelligence test scores or school achievement at 17 years of age [13].
  • Each subject had a dietary assessment, mental test score, outdoor score, serum 25 hydroxyvitamin D level, and a general biochemical screening at baseline in April 1993 which was repeated in September 1993, April 1994, and September 1994 [14].
  • Red blood cell folate levels showed positive correlations with nutritional indices and mental test scores [15].
  • The noradrenaline excretion discriminated well between physical and mental tests, but one i.e. 35% VO2max [16].
  • Hair cadmium and lead content were related to intelligence tests, motor impairment assessments, and school achievement scores from 149 children aged 5 to 16 yr enrolled in rural Maryland public school systems [17].

Biological context of Intelligence Tests


Gene context of Intelligence Tests

  • Partial correlation coefficients (controlled for level of education) revealed significant associations of total T (r = -.52, p = -.009), SHBG (r - .59, p = .002) and IGF-1 (r = .54, p = .007) with the composite measure of fluid intelligence test performance, but not with crystallized intelligence, nor verbal long-term memory [19].
  • A significant effect was found such that adults with ADHD scored lower than non-ADHD adults on WAIS intelligence tests [20].
  • The relationship of memory and intelligence test performances to coma duration was studied in 51 head injured patients who had not been operated on for intracranial haematoma [21].
  • 3. Compared with patients not taking diuretics, diuretic-users were older (mean +/- s.d., 70 years +/- 14 vs 54 +/- 20, P < 0.001), had lower abbreviated mental test scores (AMT scores seven or less, 21% vs 9%, chi 2 = 3.48, P = 0.06) and were prescribed more drugs (5.0 +/- 2.4 vs 3.2 +/- 2.0, P < 0.001) [22].
  • All children took a standardized intelligence test (Wechsler Intelligence Scale for Children-III) and completed a modified version of the Edinburgh Hand Preference Questionnaire [23].

Analytical, diagnostic and therapeutic context of Intelligence Tests

  • Body mass index (BMI), triceps skin fold (TSF), arm muscle circumference (AMC), appetite, Subjective Global Assessment (SGA), serum albumin, serum insulin-like growth factor-1 (IGF-1) and Mini Mental Test (MMT) were assessed on two occasions with a 6-month interval [24].


  1. Peptic ulcer in childhood. Psychological factors. Christodoulou, G.N., Gargoulas, A., Papaloukas, A., Marinopoulou, A., Rabavilas, A.D. Psychotherapy and psychosomatics. (1979) [Pubmed]
  2. Picture and motor sequencing in multiple sclerosis. Beatty, W.W., Monson, N. Journal of clinical and experimental neuropsychology : official journal of the International Neuropsychological Society. (1994) [Pubmed]
  3. Hyperendorphinemia in obesity is not related to the affective state. Scavo, D., Barletta, C., Vagiri, D., Burla, F., Fontana, M., Lazzari, R. Physiol. Behav. (1990) [Pubmed]
  4. Factors influencing long-term survival and disability among three-month stroke survivors. Woo, J., Kay, R., Yuen, Y.K., Nicholls, M.G. Neuroepidemiology. (1992) [Pubmed]
  5. Cholinergic and dopaminergic activities in senile dementia of Lewy body type. Perry, E.K., Marshall, E., Perry, R.H., Irving, D., Smith, C.J., Blessed, G., Fairbairn, A.F. Alzheimer disease and associated disorders. (1990) [Pubmed]
  6. Ineffectiveness of an Italian NART-equivalent for the estimation of verbal learning ability in normal elderly. Isella, V., Villa, M.L., Forapani, E., Piamarta, F., Russo, A., Appollonio, I.M. Journal of clinical and experimental neuropsychology : official journal of the International Neuropsychological Society. (2005) [Pubmed]
  7. History of mental health services in South Africa. Part IX. The protection and care of the feebleminded. Minde, M. S. Afr. Med. J. (1975) [Pubmed]
  8. Phenylalanine metabolism and intellectual functioning among carriers of phenylketonuria and hyperphenylalaninaemia. Ford, R.C., Berman, J.L. Lancet (1977) [Pubmed]
  9. Short-term, delayed, and working memory are impaired during hypoglycemia in individuals with type 1 diabetes. Sommerfield, A.J., Deary, I.J., McAulay, V., Frier, B.M. Diabetes Care (2003) [Pubmed]
  10. What one intelligence test measures: a theoretical account of the processing in the Raven Progressive Matrices Test. Carpenter, P.A., Just, M.A., Shell, P. Psychological review. (1990) [Pubmed]
  11. Effects of thallium poisoning on intellectual function. Thompson, C., Dent, J., Saxby, P. The British journal of psychiatry : the journal of mental science. (1988) [Pubmed]
  12. Oral creatine monohydrate supplementation improves brain performance: a double-blind, placebo-controlled, cross-over trial. Rae, C., Digney, A.L., McEwan, S.R., Bates, T.C. Proc. Biol. Sci. (2003) [Pubmed]
  13. Neonatal hyperbilirubinemia and physical and cognitive performance at 17 years of age. Seidman, D.S., Paz, I., Stevenson, D.K., Laor, A., Danon, Y.L., Gale, R. Pediatrics (1991) [Pubmed]
  14. Vitamin D-fortified liquid milk: benefits for the elderly community-based population. Keane, E.M., Healy, M., O'Moore, R., Coakley, D., Walsh, J.B. Calcif. Tissue Int. (1998) [Pubmed]
  15. A community study of vitamin B12 and folate levels in the elderly. Hanger, H.C., Sainsbury, R., Gilchrist, N.L., Beard, M.E., Duncan, J.M. Journal of the American Geriatrics Society. (1991) [Pubmed]
  16. Relationships between catecholamines in urine and physical and mental effort. Fibiger, W., Singer, G., Miller, A.J. International journal of psychophysiology : official journal of the International Organization of Psychophysiology. (1984) [Pubmed]
  17. Effects of low levels of cadmium and lead on cognitive functioning in children. Thatcher, R.W., Lester, M.L., McAlaster, R., Horst, R. Arch. Environ. Health (1982) [Pubmed]
  18. Event-related potential and intelligence test performance of 50 patients with epilepsy. Wu, X., Sun, J.L., Rou, B.Y. Clinical EEG (electroencephalography). (1997) [Pubmed]
  19. Relationship between circulating levels of sex hormones and insulin-like growth factor-1 and fluid intelligence in older men. Aleman, A., de Vries, W.R., Koppeschaar, H.P., Osman-Dualeh, M., Verhaar, H.J., Samson, M.M., Bol, E., de Haan, E.H. Experimental aging research. (2001) [Pubmed]
  20. Intellectual functioning in adults with ADHD: a meta-analytic examination of full scale IQ differences between adults with and without ADHD. Bridgett, D.J., Walker, M.E. Psychological assessment. (2006) [Pubmed]
  21. Memory disorder related to coma duration after head injury. Vilkki, J., Poropudas, K., Servo, A. J. Neurol. Neurosurg. Psychiatr. (1988) [Pubmed]
  22. Patient knowledge about diuretic prescription. Bevan, E.G., Currie, E.M., McGhee, S.M., McInnes, G.T. British journal of clinical pharmacology. (1993) [Pubmed]
  23. Effects of mothers' autoimmune disease during pregnancy on learning disabilities and hand preference in their children. Ross, G., Sammaritano, L., Nass, R., Lockshin, M. Archives of pediatrics & adolescent medicine. (2003) [Pubmed]
  24. Nutritional and cognitive status in elderly subjects living in service flats, and the effect of nutrition education on personnel. Irving, G.F., Olsson, B.A., Cederholm, T. Gerontology. (1999) [Pubmed]
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