Nicole Harlaar

Summary

Affiliation: King's College London
Country: UK

Publications

  1. ncbi request reprint Reading exposure: a (largely) environmental risk factor with environmentally-mediated effects on reading performance in the primary school years
    Nicole Harlaar
    MRC Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 48:1192-9. 2007
  2. ncbi request reprint Genetic influences on early word recognition abilities and disabilities: a study of 7-year-old twins
    Nicole Harlaar
    Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 46:373-84. 2005
  3. ncbi request reprint From learning to read to reading to learn: substantial and stable genetic influence
    Nicole Harlaar
    MRC Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    Child Dev 78:116-31. 2007
  4. pmc Generalist genes and learning disabilities: a multivariate genetic analysis of low performance in reading, mathematics, language and general cognitive ability in a sample of 8000 12-year-old twins
    Claire M A Haworth
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 50:1318-25. 2009
  5. doi request reprint More than just IQ: school achievement is predicted by self-perceived abilities--but for genetic rather than environmental reasons
    Corina U Greven
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, London SE5 8AF, United Kingdom
    Psychol Sci 20:753-62. 2009
  6. ncbi request reprint Internet cognitive testing of large samples needed in genetic research
    Claire M A Haworth
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, London, United Kingdom
    Twin Res Hum Genet 10:554-63. 2007
  7. pmc Clones in the classroom: a daily diary study of the nonshared environmental relationship between monozygotic twin differences in school experience and achievement
    Kathryn Asbury
    Social, Genetic and Developmental Psychiatry Centre, King s College London, United Kingdom
    Twin Res Hum Genet 11:586-95. 2008
  8. pmc Genetic Overlap between ADHD Symptoms and Reading is largely Driven by Inattentiveness rather than Hyperactivity-Impulsivity
    Corina U Greven
    King s College London, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, London, United Kingdom
    J Can Acad Child Adolesc Psychiatry 20:6-14. 2011
  9. ncbi request reprint A behavioural genomic analysis of DNA markers associated with general cognitive ability in 7-year-olds
    Nicole Harlaar
    Institute of Psychiatry, King s College London, London, UK
    J Child Psychol Psychiatry 46:1097-107. 2005
  10. doi request reprint Why do preschool language abilities correlate with later reading? A twin study
    Nicole Harlaar
    King s College London, England
    J Speech Lang Hear Res 51:688-705. 2008

Detail Information

Publications16

  1. ncbi request reprint Reading exposure: a (largely) environmental risk factor with environmentally-mediated effects on reading performance in the primary school years
    Nicole Harlaar
    MRC Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 48:1192-9. 2007
    ....
  2. ncbi request reprint Genetic influences on early word recognition abilities and disabilities: a study of 7-year-old twins
    Nicole Harlaar
    Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 46:373-84. 2005
    ..A fundamental issue for child psychology concerns the origins of individual differences in early reading development...
  3. ncbi request reprint From learning to read to reading to learn: substantial and stable genetic influence
    Nicole Harlaar
    MRC Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    Child Dev 78:116-31. 2007
    ..Genetic influences on reading are substantial and stable during the elementary school years despite the shift from "learning to read" to "reading to learn."..
  4. pmc Generalist genes and learning disabilities: a multivariate genetic analysis of low performance in reading, mathematics, language and general cognitive ability in a sample of 8000 12-year-old twins
    Claire M A Haworth
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    J Child Psychol Psychiatry 50:1318-25. 2009
    ..Here we assess whether this finding extends to language and general cognitive disabilities, as well as replicating the earlier finding for reading and mathematics in an older and larger sample...
  5. doi request reprint More than just IQ: school achievement is predicted by self-perceived abilities--but for genetic rather than environmental reasons
    Corina U Greven
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, London SE5 8AF, United Kingdom
    Psychol Sci 20:753-62. 2009
    ..It should therefore be possible to identify "SPA genes" that predict school achievement independently of "IQ genes."..
  6. ncbi request reprint Internet cognitive testing of large samples needed in genetic research
    Claire M A Haworth
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, London, United Kingdom
    Twin Res Hum Genet 10:554-63. 2007
    ..We conclude that Internet testing can be reliable and valid for collecting cognitive test data on large samples even for children as young as 10 years...
  7. pmc Clones in the classroom: a daily diary study of the nonshared environmental relationship between monozygotic twin differences in school experience and achievement
    Kathryn Asbury
    Social, Genetic and Developmental Psychiatry Centre, King s College London, United Kingdom
    Twin Res Hum Genet 11:586-95. 2008
    ..10, p < .05). These results indicate that MZ twins experience the classroom differently and that differences in their experience are associated with differences in their achievement...
  8. pmc Genetic Overlap between ADHD Symptoms and Reading is largely Driven by Inattentiveness rather than Hyperactivity-Impulsivity
    Corina U Greven
    King s College London, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, London, United Kingdom
    J Can Acad Child Adolesc Psychiatry 20:6-14. 2011
    ..To assess the genetic and environmental etiology of the co-occurence of ADHD symptoms and reading difficulties using the largest sample to date, distinguishing two dimensions of ADHD and two of reading...
  9. ncbi request reprint A behavioural genomic analysis of DNA markers associated with general cognitive ability in 7-year-olds
    Nicole Harlaar
    Institute of Psychiatry, King s College London, London, UK
    J Child Psychol Psychiatry 46:1097-107. 2005
    ..These children have also been studied at 2, 3, 4, and 7 years of age on measures of cognitive and language development and behaviour problems; family environment was also assessed...
  10. doi request reprint Why do preschool language abilities correlate with later reading? A twin study
    Nicole Harlaar
    King s College London, England
    J Speech Lang Hear Res 51:688-705. 2008
    ..Language acquisition is predictive of successful reading development, but the nature of this link is poorly understood...
  11. ncbi request reprint Substantial genetic influence on mild mental impairment in early childhood
    Frank M Spinath
    Department of Psychology, University of Bielefeld, Bielefeld, Germany
    Am J Ment Retard 109:34-43. 2004
    ..49, which is significantly greater than heritability for the rest of the population in early childhood. These results suggest that mild mental impairment is a good target for neuroscience research on global brain function and dysfunction...
  12. ncbi request reprint Genetic effects on male sexual coercion
    Ada Johansson
    Department of Psychology, Center of Excellence for Behavior Genetics, Abo Akademi University, Turku, Finland
    Aggress Behav 34:190-202. 2008
    ..This latent factor was hypothesized to reflect a general tendency for antisocial behavior that is pervasive across different situations. Relevant theories on sexual coercion were discussed in light of the results...
  13. ncbi request reprint Common aetiology for diverse language skills in 4 1/2-year-old twins
    Marianna E Hayiou-Thomas
    Department of Psychology, University of York, Heslington
    J Child Lang 33:339-68. 2006
    ..64 and shared environment correlation of 1.00. We conclude that to a large extent, the same genetic and environmental factors underlie the development of individual differences in a wide range of linguistic skills...
  14. doi request reprint Retrospective reports of parental physical affection and parenting style: a study of Finnish twins
    Nicole Harlaar
    MRC Social Genetic Developmental Psychiatry Centre, King s College
    J Fam Psychol 22:605-13. 2008
    ..The findings have implications for intervention and prevention work with families and for interpretation of evidence for interactions between genes and parenting behaviors...
  15. ncbi request reprint Premature and delayed ejaculation: genetic and environmental effects in a population-based sample of Finnish twins
    Patrick Jern
    Center of Excellence in Behavior Genetics, Abo Akademi University Department of Psychology, Turku, Finland
    J Sex Med 4:1739-49. 2007
    ....
  16. ncbi request reprint Potential for homosexual response is prevalent and genetic
    Pekka Santtila
    Center of Excellence in Behavior Genetics, Department of Psychology, Abo Akademi University, 20500 Turku, Finland
    Biol Psychol 77:102-5. 2008
    ..The potential to engage in homosexual behavior was influenced by genetic effects for both men (37.4%) and women (46.4%) and these overlapped only partly with those for overt homosexual behavior...