Relation of mathematical ability to psychosis in Iceland

  title={Relation of mathematical ability to psychosis in Iceland},
  author={Jon L. Karlsson},
  journal={Clinical Genetics},
  • J. Karlsson
  • Published 1 December 1999
  • Psychology, Medicine
  • Clinical Genetics
A study of mathematically gifted Icelanders demonstrates an increased risk of mental illness in their ranks. Psychotic disorders are also frequent among their relatives. Linkage of academic records with previously published data on the family distribution of psychosis reveals a pattern compatible with the hypothesis that high arousal plays a role in reasoning ability. 
Mental abilities of male relatives of psychotic patients
  • J. Karlsson
  • Medicine, Psychology
    Acta psychiatrica Scandinavica
  • 2001
Researchers study the academic and creative potentials of first‐degree relatives of hospital‐treated psychotic patients in Iceland to find out whether they have any academic or creative potential.
Developmental precursors of psychosis
No powerful risk factor, premorbid sign, or risk indicator has been identified that is useful for prediction of psychoses in the general population that is not necessarily specific to schizophrenia.
Creative thinking in schizophrenia: The role of executive dysfunction and symptom severity
Results are at odds with the popular notion of enhanced creative thinking in schizophrenia, but elucidate complex interactions between executive control and certain facets of creative thinking.
School success in childhood and subsequent prodromal symptoms and psychoses in the Northern Finland Birth Cohort 1986
Learning deficits in childhood did not increase the risk of prodromal symptoms in adolescence or later psychosis in this large birth cohort, suggesting that learning deficits are not always associated with increased risk of psychosis.
Links Between Creativity and Mental Disorder
Evidence exists to support some form of association between creativity and mental disorder, but the direction of any causal link remains obscure.
High intelligence and the risk of ADHD and other psychopathology
Higher IQ score was most strongly related to fewer attention problems, with more rater discrepancy in the high v. average IQ range, and attention problems in highly intelligent children are exceptional and affect school performance; they are therefore a reason for clinical concern.
Understanding Mathematical Giftedness: Integrating Self, Action Repertoires and the Environment
A modern conceptualization of mathematical giftedness must take into account different cultural views of the nature of mathematics as well as conform to Ziegler and Heller‘s (2000) four postulates of
Resolving the paradox of common, harmful, heritable mental disorders: which evolutionary genetic models work best?
Only polygenic mutation-selection balance seems consistent with the data on mental disorder prevalence rates, fitness costs, the likely rarity of susceptibility alleles, and the increased risks of mental disorders with brain trauma, inbreeding, and paternal age.
The Paradoxical Brain: Index
Acknowledgements Preface Foreword Oliver Sacks Author affiliations Abbreviations 1. The paradoxical nature of nature Narinder Kapur, Alvaro Pascual-Leone, Tom Manly and Jonathan Cole 2. Paradoxical


Partly Dominant Transmission of Schizophrenia in Iceland
  • J. Karlsson
  • Medicine, Psychology
    British Journal of Psychiatry
  • 1988
Voluminous data on the familial distribution of schizophrenia in Iceland were evaluated in terms of a partly dominant genetic mechanism. The risks were found in most instances to be proportional to
The Continuum of Psychosis and its Implication for the Structure of the Gene
  • T. Crow
  • Psychology, Medicine
    British Journal of Psychiatry
  • 1986
Three observations challenge Kraepelin's binary view of the functional psychoses: a bimodal distribution of the clinical features of manic-depressive illness and schizophrenia has not been
Genetics of Human Mentality
Preface General Conceptions of Human Personality Growth of Intellectual Functions Measures of Mental Capacity Past Exploratory Studies of Bright Persons Basis of Mental Traits and Related Disorders
Sex differences in mathematical reasoning ability: more facts.
The results obtained by both procedures establish that by age 13 a large sex difference in mathematical reasoning ability exists and that it is especially pronounced at the high end of the distribution: among students who scored greater than or equal to 700, boys outnumbered girls 13 to 1.
Inheritance of Creative Intelligence
  • H. Pastides
  • Chemistry
    The Yale Journal of Biology and Medicine
  • 1979
This book explores the mechanisms of enzyme catalysis and specificity, from both the theoretical and experimental points of view. The emphasis is on kinetics and chemical thermodynamics as methods
Epidemiology of mental disorders in Iceland.