The impact of childhood intelligence on later life: following up the Scottish mental surveys of 1932 and 1947.

The Scottish Mental Surveys of 1932 and 1947 collected valid IQ-type test scores for almost everyone born in 1921 and 1936 and attending school on June 1, 1932 (N=89,498) and June 4, 1947 (N=70,805). These surveys are described. This research, using the surveys' data, examined (a) the stability of intelligence differences across the life span, (b) the determinants of cognitive change from childhood to old age, and (c) the impact of childhood intelligence on survival and health in old age. Surviving participants of the Scottish Mental Surveys were tested, and the surveys' data were linked with public and health records. Novel findings on the stability of IQ scores from age 11 to age 80; sex differences in cognitive aging; the dedifferentiation hypothesis of cognitive aging; and the effect of childhood IQ on all-cause and specific mortality, morbidity, and frailty in old age are presented.

[1]  A. Gawande,et al.  The bell curve. , 2005, Minnesota medicine.

[2]  Valerie Wilson,et al.  Childhood IQ, Social Class, Deprivation, and Their Relationships with Mortality and Morbidity Risk in Later Life: Prospective Observational Study Linking the Scottish Mental Survey 1932 and the Midspan Studies , 2003, Psychosomatic medicine.

[3]  L J Whalley,et al.  Childhood mental ability and smoking cessation in adulthood: prospective observational study linking the Scottish Mental Survey 1932 and the Midspan studies , 2003, Journal of epidemiology and community health.

[4]  Roger T Staff,et al.  Cerebral white matter abnormalities and lifetime cognitive change: a 67-year follow-up of the Scottish Mental Survey of 1932. , 2003, Psychology and aging.

[5]  I. Deary,et al.  The influence of the e4 allele of the apolipoprotein E gene on childhood IQ, nonverbal reasoning in old age, and lifetime cognitive change , 2003 .

[6]  I. Deary,et al.  IQ at age 11 and longevity: Results from a follow-up of the Scottish mental survey 1932 , 2003 .

[7]  Caroline Hayward,et al.  Ageing: Cognitive change and the APOE ɛ4 allele , 2002, Nature.

[8]  Arthur F Kramer,et al.  Achieving and maintaining cognitive vitality with aging. , 2002, Mayo Clinic proceedings.

[9]  Ian J Deary,et al.  Homocysteine, B vitamin status, and cognitive function in the elderly. , 2002, The American journal of clinical nutrition.

[10]  C. Brayne,et al.  Cognition and survival: an exploration in a large multicentre study of the population aged 65 years and over. , 2001, International journal of epidemiology.

[11]  S. Ho,et al.  A 3-year follow-up study of social, lifestyle and health predictors of cognitive impairment in a Chinese older cohort. , 2001, International journal of epidemiology.

[12]  L J Whalley,et al.  Neuropsychologic correlates of brain white matter lesions depicted on MR images: 1921 Aberdeen Birth Cohort. , 2001, Radiology.

[13]  I. Deary,et al.  Birth weight and cognitive function at age 11 years: the Scottish Mental Survey 1932 , 2001, Archives of disease in childhood.

[14]  H. McNulty,et al.  Plasma homocysteine is not subject to seasonal variation. , 2001, Clinical chemistry.

[15]  Ian J Deary,et al.  Longitudinal cohort study of childhood IQ and survival up to age 76 , 2001, BMJ : British Medical Journal.

[16]  I. Deary,et al.  The NART as an index of prior intellectual functioning: a retrospective validity study covering a 66-year interval , 2001, Psychological Medicine.

[17]  J. Flynn,et al.  Heritability estimates versus large environmental effects: the IQ paradox resolved. , 2001, Psychological review.

[18]  T. Arendt.  Alzheimer's disease as a disorder of mechanisms underlying structural brain self-organization , 2001, Neuroscience.

[19]  G. Mcclearn,et al.  Genetic epidemiologic studies on age-specified traits , 2000 .

[20]  I. Deary,et al.  Childhood mental ability and dementia , 2000, Neurology.

[21]  I. Deary,et al.  Mental ability age 11 years and health status age 77 years. , 2000, Age and ageing.

[22]  H. Christensen,et al.  Education, Activity, Health, Blood Pressure and Apolipoprotein E as Predictors of Cognitive Change in Old Age: A Review , 2000, Gerontology.

[23]  J. Starr,et al.  Assessment and Treatment of Dementia in Medical Patients , 2000, Psychotherapy and Psychosomatics.

[24]  Ian J. Deary,et al.  The Stability of Individual Differences in Mental Ability from Childhood to Old Age: Follow-up of the 1932 Scottish Mental Survey , 2000 .

[25]  M N Rossor,et al.  Intracranial volume and Alzheimer disease: evidence against the cerebral reserve hypothesis. , 2000, Archives of neurology.

[26]  L. Carstensen,et al.  The aging mind : opportunities in cognitive research , 2000 .

[27]  K J Anstey,et al.  Interrelationships among biological markers of aging, health, activity, acculturation, and cognitive performance in late adulthood. , 1999, Psychology and aging.

[28]  W. Jagust,et al.  The Role of APOE ∊4 in Modulating Effects of Other Risk Factors for Cognitive Decline in Elderly Persons , 1999 .

[29]  S. DeKosky,et al.  Small head size is related to low Mini-Mental State Examination scores in a community sample of nondemented older adults , 1999, Neurology.

[30]  S. Cummings,et al.  Apolipoprotein E polymorphism: A new genetic marker of hip fracture risk--The Study of Osteoporotic Fractures. , 1999, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

[31]  伊藤 秀一.  Poverty in the United Kingdom , 1999 .

[32]  A. Korten,et al.  Health, cognitive, and psychosocial factors as predictors of mortality in an elderly community sample. , 1999, Journal of epidemiology and community health.

[33]  James A. Mortimer,et al.  Linguistic Ability in Early Life and Longevity: Findings from the Nun Study , 1999 .

[34]  J. Flynn.  Searching for justice: The discovery of IQ gains over time. , 1999 .

[35]  I. Deary,et al.  Is age kinder to the initially more able?: Differential ageing of a verbal ability in the , 1998 .

[36]  I. Deary,et al.  Fluid intelligence, memory and blood pressure in cognitive aging , 1998 .

[37]  Higher instrumental activities of daily living disability in Hispanics compared with non-Hispanic whites in rural Colorado. The San Luis Valley Health and Aging Study. , 1998, American journal of epidemiology.

[38]  G. Smith,et al.  Adverse socioeconomic conditions in childhood and cause specific adult mortality: prospective observational study , 1998, BMJ.

[39]  R. Morgan,et al.  Rectal examinations in elderly subjects: attitudes of patients and doctors , 1998 .

[40]  C. Pieper,et al.  Physical fitness and functional limitations in community-dwelling older adults. , 1998, Medicine and science in sports and exercise.

[41]  R. B. Wolk,et al.  Inequality by Design: Cracking the Bell Curve Myth , 1998 .

[42]  M. Nevitt,et al.  Strength, Physical Activity, and Body Mass Index: Relationship to Performance‐Based Measures and Activities of Daily Living Among Older Japanese Women in Hawaii , 1998, Journal of the American Geriatrics Society.

[43]  G. Watt,et al.  Education and occupational social class: which is the more important indicator of mortality risk? , 1998, Journal of epidemiology and community health.

[44]  T. Salthouse,et al.  Is age kinder to females than to males? , 1998 .

[45]  I. Deary,et al.  The biology of intelligence: From association to mechanism , 1998 .

[46]  K. Morgan,et al.  The Nottingham Longitudinal Study of Activity and Ageing: a methodological overview. , 1998, Age and ageing.

[47]  E. Bassey,et al.  Longitudinal changes in selected physical capabilities: muscle strength, flexibility and body size. , 1998, Age and ageing.

[48]  A. Jensen,et al.  The g factor , 1996, Nature.

[49]  S. Sharp.  ‘Much more at home with 3.999 pupils than with four’1: The contributions to psychometrics of Sir Godfrey Thomson , 1997 .

[50]  Y. Ouchi,et al.  Association of Bone Mineral Density with Apolipoprotein E Phenotype , 1997, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

[51]  S Sabroe,et al.  Birth weight and cognitive function in young adult life: historical cohort study , 1997, BMJ.

[52]  D. Barker,et al.  Association between low birthweight and high resting pulse in adult life: is the sympathetic nervous system involved in programming the insulin resistance syndrome? , 1997, Diabetic medicine : a journal of the British Diabetic Association.

[53]  Y. Stern,et al.  An association between head circumference and Alzheimer's disease in a population-based study of aging and dementia , 1997, Neurology.

[54]  I. Deary,et al.  Age-associated cognitive decline in healthy old people. , 1997, Age and ageing.

[55]  P. Baltes,et al.  Emergence of a powerful connection between sensory and cognitive functions across the adult life span: a new window to the study of cognitive aging? , 1997, Psychology and aging.

[56]  E. Mori,et al.  Premorbid brain size as a determinant of reserve capacity against intellectual decline in Alzheimer's disease. , 1997, The American journal of psychiatry.

[57]  Ian J. Deary,et al.  Intelligence and the differentiation hypothesis , 1996 .

[58]  Frances C. Grafton,et al.  Correlations among Cognitive Abilities Are Lower for Higher Ability Groups. , 1996 .

[59]  I. Deary,et al.  The Effects of Antihypertensive Treatment on Cognitive Function: Results from the HOPE Study , 1996, Journal of the American Geriatrics Society.

[60]  D R Wekstein,et al.  Linguistic ability in early life and cognitive function and Alzheimer's disease in late life. Findings from the Nun Study. , 1996, JAMA.

[61]  R. Sternberg,et al.  Intelligence: Knowns and unknowns. , 1996 .

[62]  L. Whalley,et al.  Epidemiology of Presenile Alzheimer's Disease in Scotland (1974–88) , 1995, British Journal of Psychiatry.

[63]  L. Whalley,et al.  Epidemiology of Presenile Alzheimer's Disease in Scotland (1974–88) , 1995, British Journal of Psychiatry.

[64]  H. Friedman,et al.  Sociodemographic and psychosocial factors in childhood as predictors of adult mortality. , 1995, American journal of public health.

[65]  J. Brandt,et al.  Intelligence and education as predictors of cognitive state in late life , 1995, Neurology.

[66]  T. Arbuckle,et al.  Structural equation model of intellectual change and continuity and predictors of intelligence in older men. , 1995, Psychology and Aging.

[67]  I. Deary,et al.  The effect of IQ level on the degree of cognitive deterioration experienced during acute hypoglycemia in normal humans , 1995 .

[68]  A. Yashin,et al.  Mortality among twins after age 6: fetal origins hypothesis versus twin method , 1995, BMJ.

[69]  P. Eneroth,et al.  Long-term development for girls and boys at age 16-18 as related to birth weight and gestational age. , 1994, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

[70]  J. J. Claus,et al.  Cardiovascular disease and distribution of cognitive function in elderly people: the Rotterdam study , 1994, BMJ.

[71]  R. Mayeux,et al.  Influence of education and occupation on the incidence of Alzheimer's disease. , 1994, JAMA.

[72]  D. Vågerö,et al.  Ischaemic heart disease and low birth weight: a test of the fetal-origins hypothesis from the Swedish Twin Registry , 1994, The Lancet.

[73]  R. Herrnstein,et al.  The Bell Curve , 1994 .

[74]  J. Mackenbach,et al.  The size of mortality differences associated with educational level in nine industrialized countries. , 1994, American journal of public health.

[75]  P. Satz.  Brain reserve capacity on symptom onset after brain injury: A formulation and review of evidence for threshold theory. , 1993 .

[76]  A. LaCroix,et al.  Maintaining mobility in late life. I. Demographic characteristics and chronic conditions. , 1993, American journal of epidemiology.

[77]  R. Katzman.,et al.  Education and the prevalence of dementia and Alzheimer's disease , 1993, Neurology.

[78]  L. Whalley,et al.  The quantification of the relative effects of age and NART‐predicted IQ on cognitive function in healthy old people , 1992 .

[79]  K. Holmen,et al.  Prevalence of Alzheimer's disease and other dementias in an elderly urban population , 1991, Neurology.

[80]  D. R. Owen,et al.  Intelligence and educational level in adult males at the extremes of stature. , 1991, Human biology.

[81]  Robert A. Bornstein,et al.  The Wechsler Memory Scale—Revised , 1990 .

[82]  R L Kane,et al.  Education, survival, and independence in elderly Catholic sisters, 1936-1988. , 1989, American journal of epidemiology.

[83]  Douglas K. Detterman,et al.  Correlations of Mental Tests with Each Other and with Cognitive Variables Are Highest for Low IQ Groups. , 1989 .

[84]  C. Reynolds,et al.  Wechsler memory scale-revised , 1988 .

[85]  L. Jarvik,et al.  Cognitive Function and Prediction of Dementia in Old Age , 1987, International journal of aging & human development.

[86]  G. Huston.  The Hospital Anxiety and Depression Scale. , 1987, The Journal of rheumatology.

[87]  R. Burgess.  Key Variables in Social Investigation , 1986 .

[88]  Clarke Ja,et al.  Medical record linkage in Scotland. , 1979 .

[89]  J. Clarke,et al.  Medical record linkage in Scotland. , 1979, Health bulletin.

[90]  S. Folstein,et al.  "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician. , 1975, Journal of psychiatric research.

[91]  W. Mcalister,et al.  Intelligence, reading achievement, physical size and social class. A study of St. Louis Caucasian boys aged 8-0 to 9-6 years, attending regular schools. , 1974, The Journal of pediatrics.

[92]  S. Kay,et al.  A Temporal Measure of Attention in Schizophrenia and its Clinical Significance , 1974, British Journal of Psychiatry.

[93]  John O. Kangas,et al.  Intelligence at middle age: A thirty-eight year follow-up. , 1971 .

[94]  E. A. Stead,et al.  Health and Illness , 1997 .

[95]  W. Owens.  Age and mental abilities: a second adult follow-up. , 1966, Journal of educational psychology.

[96]  M. Roth,et al.  Old Age Mental Disorders in Newcastle upon Tyne , 1964, British Journal of Psychiatry.

[97]  H. Crott,et al.  STUDIES ON THE FACTOR STRUCTURE OF INTELLIGENCE IN CHILDREN, ADOLESCENTS, AND ADULTS. , 1964, Vita humana. Internationale Zeitschrift fur Lebensaltersforschung. International journal of human development. Journal international de developpement humain.

[98]  S. Dunn.  Book Review: The Level and Trend of National Intelligence , 1963 .

[99]  J. Raven,et al.  Manual for Raven's progressive matrices and vocabulary scales , 1962 .

[100]  W. Owens.  Is age kinder to the initially more able? , 1959, Journal of gerontology.

[101]  R. Dale,et al.  Eleven-year-olds grow up , 1959 .

[102]  C. Fleming.  Educational and Other Aspects of the 1947 Scottish Mental Survey , 1958 .

[103]  W. H. Sewell,et al.  The Trend of Scottish Intelligence: A Comparison of the 1947 and 1932 Surveys of the Intelligence of Eleven-year-old Pupils. , 1950 .

[104]  R. C. K. Ensor,et al.  The trend of Scottish intelligence: a comparison of the 1947 and 1932 surveys of the intelligence of eleven-year-old pupils , 1950 .

[105]  Evelyn Lawrence,et al.  The Factors of the Mind , 1941, Mental Health.

[106]  A. Macmeeken.  The intelligence of a representative group of Scottish children , 1939 .

[107]  C. B.,et al.  The Factorial Analysis of Human Ability , 1939, Nature.

[108]  F. C. Bartlett,et al.  The Scottish council for research in education: the intelligence of Scottish children: a national survey of an age-group , 1934 .

[109]  C. Spearman,et al.  "THE ABILITIES OF MAN". , 1928, Science.

[110]  C. Burt.  Experimental Tests of General Intelligence. , 1909 .

[111]  Wm. R. Wright.  General Intelligence, Objectively Determined and Measured. , 1905 .