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Havers, Laura and von Stumm, Sophie and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2023) Psychotic experiences and negative symptoms from adolescence to emerging adulthood: developmental trajectories and associations with polygenic scores and childhood characteristics. Psychological Medicine 53 (12), pp. 5685-5697. ISSN 0033-2917.

Hannigan, L. and Askeland, R.B. and Ask, H. and Tesli, M. and Corfield, E. and Ayorech, Z. and Magnus, P. and Njølstad, P.R. and Øyen, A-S. and Stoltenberg, C. and Andreassen, O.A. and Ronald, Angelica and Davey Smith, G. and Reichborn-Kjennerud, T. and Havdahl, A. (2023) Developmental milestones in early childhood and genetic liability to neurodevelopmental disorders. Psychological Medicine 53 (5), pp. 1750-1758. ISSN 0033-2917.

Gidziela, A. and Ahmadzadeh, Y.I. and Michelini, G. and Allegrini, A.G. and Agnew-Blais, J. and Lau, L.Y. and Duret, M. and Procopio, F. and Daly, E. and Ronald, Angelica and Rimfeld, K. and Malanchini, M. (2023) A meta-analysis of genetic effects on neurodevelopmental disorders and co-occurring conditions. Nature Human Behaviour , ISSN 2397-3374.

Peel, A. and Oginni, O. and Assary, E. and Krebs, G. and Lockhart, C. and McGregor, T. and Palaiologou, E. and Ronald, Angelica and Danese, A. and Eley, T.C. (2022) A multivariate genetic analysis of anxiety sensitivity, environmental sensitivity and reported life events in adolescents. Journal of Child Psychology and Psychiatry , ISSN 0021-9630.

Gidziela, A. and Malanchini, M. and Rimfeld, K. and McMillan, A. and Ronald, Angelica and Viding, E. and Pike, A. and Asbury, K. and Eley, T.C. and von Stumm, S. and Plomin, R. (2022) Explaining the influence of nonshared environment (NSE) on symptoms of behaviour problems from preschool to adulthood: mind the missing NSE gap. Journal of Child Psychology and Psychiatry , ISSN 0021-9630.

Viktorsson, C. and Portugal, A.M. and Li, D. and Rudling, M. and Siqueiros Sanchez, M. and Tammimies, K. and Taylor, M.J. and Ronald, Angelica and Falck-Ytter, T. (2022) Preferential looking to eyes versus mouth in early infancy: Heritability and link to concurrent and later development. Journal of Child Psychology and Psychiatry , ISSN 0021-9630.

Viktorsson, C. and Lindskog, M. and Li, D. and Tammimies, K. and Taylor, M.J. and Ronald, Angelica and Falck-Ytter, T. (2022) Infants’ sense of approximate numerosity: heritability and link to other concurrent traits. Developmental Science (e13347), ISSN 1363-755x.

Ronald, Angelica and Pain, O. (2022) A revolution is brewing in how we understand the shared genetic causes of psychiatric disorders. [Editorial/Introduction]

Taylor, M.J. and Ronald, Angelica and Martin, J. and Lundström, S. and Hosang, G.M. and Lichtenstein, P (2022) Examining the association between childhood autistic traits and adolescent hypomania: a longitudinal twin study. Psychological Medicine 52 (15), pp. 3606-3615. ISSN 0033-2917.

Maxwell, J. and Ronald, Angelica and Cardno, A.G. and Breen, G. and Rimfeld, K. and Vassos, E. (2022) Genetic and geographical associations with six dimensions of psychotic experiences in adolesence. Schizophrenia Bulletin , ISSN 0586-7614.

Hollowell, Anja and Gui, Anna and Pourcain, B.S. and Middeldorp, C. and Fitzsimons, E. and Johnson, Mark H. and Dudbridge, F. and Ronald, Angelica (2022) Mapping the common genetic architecture of early temperament: first-look results from genone-wide association analyses of infant cohorts. European Neuropsychopharmacology 63 , e291. ISSN 0924-977X.

Portugal, A.M. and Taylor, M.J. and Viktorsson, C. and Nystrom, P. and Li, D. and Tammimies, K. and Ronald, Angelica and Falck-Ytter, T. (2022) Pupil size and pupillary light reflex in early infancy: heritability and link to genetic liability to schizophrenia. Journal of Child Psychology and Psychiatry 63 (9), pp. 1068-1077. ISSN 0021-9630.

Austerberry, C. and Mateen, M. and Fearon, P. and Ronald, Angelica (2022) Heritability of psychological traits and developmental milestones in infancy: a systematic review and meta-analysis. JAMA Network Open 5 (8), e2227887. ISSN 2574-3805.

Taylor, M.J. and Freeman, D. and Lundstrom, S. and Larsson, H. and Ronald, Angelica (2022) Heritability of psychotic experiences in adolescents and interaction with environmental risk. JAMA Psychiatry 79 (9), pp. 889-897. ISSN 2168-622X.

Ronald, Angelica (2022) Transdiagnostic research: transitory or transformative? [Editorial/Introduction]

Gidziela, A. and Rimfeld, K. and Malanchini, M. and Allegrini, A.G. and McMillan, A. and Selzam, S. and Ronald, Angelica and Viding, E. and von Stumm, S. and Eley, T.C. and Plomin, R. (2022) Using DNA to predict behaviour problems from preschool to adulthood. Journal of Child Psychology and Psychiatry 63 (7), pp. 781-792. ISSN 0021-9630.

Gidziela, A. and Rimfeld, K. and Malanchini, M. and Allegrini, A.G. and McMillan, A. and Selzam, S. and Ronald, Angelica and Viding, E. and von Stumm, S. and Eley, T.C. and Plomin, R. (2022) Using DNA to predict behaviour problems from preschool to adulthood. Journal of Child Psychology and Psychiatry 63 (7), pp. 781-792. ISSN 0021-9630.

Colvert, E. and Simonoff, E. and Capp, S.J. and Ronald, Angelica and Bolton, P. and Happe, F. (2022) Autism Spectrum Disorder and mental health problems: patterns of difficulties and longitudinal trajectories in a population-based twin sample. Journal of Autism and Developmental Disorders 52 , pp. 1077-1091. ISSN 0162-3257.

Austerberry, Chloe and Fearon, P. and Ronald, Angelica and Leve, L.D. and Ganiban, J.M. and Natsuaki, M.N. and Shaw, D.S. and Neiderhiser, J.M. and Reiss, D. (2022) Early manifestations of intellectual performance: evidence that genetic effects on later academic test performance are mediated through verbal ability in early childhood. Child Development 93 (2), e188-e206. ISSN 0009-3920.

Hosang, G.M. and Martin, J. and Karlsson, R. and Lundström, S. and Larsson, H. and Ronald, Angelica and Lichtenstein, P. and Taylor, M.J. (2022) Association of aetiological factors for hypomanic symptoms, bipolar disorder and other severe mental illnesses: twin and polygenic risk score analysis. JAMA Psychiatry 79 (2), pp. 143-150. ISSN 2168-622X.

Havers, Laura and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2022) The latent structure of negative symptoms in the general population in adolescence and emerging adulthood. Schizophrenia Bulletin Open 3 (1), ISSN 2632-7899.

Gómez-Vallejo, M. and Leoni, M. and Ronald, Angelica and Colvert, E. and Happé, F. and Bolton, P. (2021) Autism spectrum disorder and obstetric optimality: a twin study and meta-analysis of sibling studies. Journal of Child Psychology and Psychiatry 62 (11), pp. 1353-1362. ISSN 0021-9630.

Franke, B. and Fombonne, E. and Ronald, Angelica (2021) The new genetics of autism. [Editorial/Introduction]

Reed, Z. and Larsson, H. and Haworth, C.M.A. and Rai, D. and Lunstrom, S. and Ronald, Angelica and Reichenberg, A. and Lichtenstein, P. and Davis, O.S.P. (2021) Mapping the genetic and environmental aetiology of autistic traits in Sweden and the United Kingdom. Journal of Child Psychology and Psychiatry Advances 1 (3), e12039. ISSN 2692-9384.

Shakoor, S and Zavos, H.M.S. and Gregory, A.M. and Ronald, Angelica (2021) The association between bullying-victimisation and sleep disturbances in adolescence: evidence from a twin study. Journal of Sleep Research 30 (5), e13321. ISSN 0962-1105.

Mason, D. and Ronald, Angelica and Ambler, A. and Caspi, A. and Houts, R. and Poulton, R. and Ramrakha, S. and Wertz, J. and Moffitt, T.E. and Happé, F. (2021) Autistic traits are associated with faster pace of aging: evidence from the Dunedin Study at age 45. Molecular Autism 14 (8), pp. 1684-1694. ISSN 2040-2392.

Falck-Ytter, T. and Hamrefors, L. and Sanchez, M.S. and Portugal, A.M. and Taylor, M.J. and Li, D. and Viktorsson, C. and Hardiansyah, I. and Myers, L. and Westberg, L. and Bölte, S. and Tammimies, K. and Ronald, Angelica (2021) The Babytwins Study Sweden (BATSS): a multi-method infant twin study of genetic and environmental factors influencing infant brain and behavioral development. Twin Research and Human Genetics 24 (4), pp. 217-227. ISSN 1832-4274.

Barkhuizen, W. and Dudbridge, F. and Ronald, Angelica (2021) Genetic overlap and causal associations between smoking behaviours and mental health. Scientific Reports 11 (14871), ISSN 2045-2322.

Siqueiros Sanchez, M. and Ronald, Angelica and Mason, Luke and Jones, Emily J.H. and Bolte, S. and Falck-Ytter, T. (2021) Visual disengagement in young infants in relation to age, sex, SES, developmental level and adaptive functioning. Infant Behavior and Development 63 , ISSN 0163-6383.

Cardno, A.G. and Selzam, S. and Freeman, D. and Ronald, Angelica (2021) Psychotic-like experiences in adolescence occurring in combination or isolation: associations with Schizophrenia risk factors. Psychiatric Research and Clinical Practice 3 (2), pp. 67-75. ISSN 2575-5609.

Polderman, T.J.C. and De Bode, N. and Ronald, Angelica (2020) Systematic review: How the ADHD polygenic risk score adds to our understanding of ADHD and associated traits. Journal of the American Academy of Child & Adolescent Psychiatry 59 (10 (S)), S158. ISSN 0890-8567.

Hollowell, A. and Ronald, Angelica (2020) Psychotic experiences associate with a bias against disconfirmatory evidence (BADE) in adolescence. Schizophrenia Research 218 , pp. 304-305. ISSN 0920-9964.

Barkhuizen, Wikus and Pain, O. and Dudbridge, F. and Ronald, Angelica (2020) Genetic overlap between psychotic experiences in the community across age and with psychiatric disorders. Translational Psychiatry 10 , p. 86. ISSN 2158-3188.

Madrid-Valero, J.J. and Ronald, Angelica and Shakeshaft, N. and Schofield, K. and Malanchini, M. and Gregory, A.M. (2020) Sleep quality, insomnia and internalising difficulties in adolescents: insights from a twin study. Sleep 43 (2), zsz229. ISSN 0161-8105.

Saffari, Ayden and Arno, M. and Nasser, E. and Ronald, Angelica and Wong, C.C.Y. and Schalkwyk, L.C. and Mill, J. and Dudbridge, F. and Meaburn, Emma (2019) RNA sequencing of identical twins discordant for autism reveals blood-based signatures implicating immune and transcriptional dysregulation. Molecular Autism 10 , p. 38. ISSN 2040-2392.

Hosang, G. and Lichtenstein, P. and Ronald, Angelica (2019) Association of genetic and environmental risks for Attention-Deficit/Hyperactivity Disorder With Hypomanic Symptoms in youths. JAMA Psychiatry 76 (11), pp. 1150-1158. ISSN 2168-622X.

Ronald, Angelica (2019) Editorial: The psychopathology p factor: will it revolutionise the science and practice of child and adolescent psychiatry? Journal of Child Psychology and Psychiatry 60 (5), pp. 497-499. ISSN 1469-7610.

Havers, Laura and Taylor, M. and Ronald, Angelica (2019) Genetic and environmental influences on the stability of psychotic experiences and negative symptoms in adolescence. Journal of Child Psychology and Psychiatry 60 (7), pp. 784-792. ISSN 0021-9630.

Ronald, Angelica (2019) The psychopathology p factor: will it revolutionise the science and practice of child and adolescent psychiatry? [Editorial/Introduction]

Ronald, Angelica (2019) Common (genetic) links between clinics and the community: new evidence from a Tourette Syndrome polygenic score. [Editorial/Introduction]

Barkhuizen, W. and Taylor, M.J. and Freeman, D. and Ronald, Angelica (2018) A twin study on the association between psychotic experiences and tobacco use during adolescence. Journal of the American Academy of Child and Adolescent Psychiatry 58 (2), 267-276.e8. ISSN 0890-8567.

Wallace, G.W. and Llewellyn, C. and Fildes, A. and Ronald, Angelica (2018) Autism spectrum disorder and food neophobia: clinical and subclinical links. American Journal of Clinical Nutrition 108 (4), pp. 701-707. ISSN 0002-9165.

Ronald, Angelica and Pain, O. (2018) A systematic review of genome-wide research on psychotic experiences and negative symptom traits: new revelations and implications for psychiatry. Human Molecular Genetics 27 (R2), R136-R152. ISSN 0964-6906.

Pain, O. and Dudbridge, F. and Ronald, Angelica (2018) Are your covariates under control? How normalization can re-introduce covariate effects. European Journal of Human Genetics 96 , pp. 1194-1201. ISSN 1018-4813.

Pain, O. and Dudbridge, F. and Cardno, A.G. and Freeman, D. and Yi, L. and Lundstrom, S. and Lichtenstein, P. and Ronald, Angelica (2018) Genome-wide analysis of adolescent psychotic-like experiences shows genetic overlap with psychiatric disorders. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 177 (4), pp. 416-425. ISSN 1552-4841.

St Pourcain, B. and Robinson, E. and Anttila, V. and Bulik-Sullivan, B. and Maller, J. and Golding, J. and Skuse, D. and Ring, S. and Evans, D. and Zammit, S. and Fisher, S. and Neale, B. and Anney, R. and Ripke, S. and Hollegaard, M. and Werge, T. and Ronald, Angelica and Grove, J. and Hougaard, D. and Børglum, A. and Mortensen, P. and Daly, M. and Davey Smith, G. (2018) ASD and schizophrenia show distinct developmental profiles in common genetic overlap with population-based social-communication difficulties. Molecular Psychiatry 23 , pp. 263-270. ISSN 1359-4184.

Cheesman, R. and Selzam, S. and Ronald, Angelica and Dale, P.S. and McAdams, T.A. and Eley, T.C. and Plomin, R. (2017) Childhood behaviour problems show the greatest gap between DNA-based and twin heritability. Translational Psychiatry 7 (12), p. 1284. ISSN 2158-3188.

Shakoor, Sania and McGuire, P. and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2017) A twin study exploring the association between childhood emotional and behaviour problems and specific psychotic experiences in a community sample of adolescents. Journal of Child Psychology and Psychiatry 59 (5), pp. 565-573. ISSN 0021-9630.

Singham, T. and Viding, E. and Schoeler, T. and Arseneault, L. and Ronald, Angelica and Cecil, C.M. and McCrory, E. and Rijsdijk, F. and Pingault, J.B. (2017) Concurrent and longitudinal contribution of exposure to bullying in childhood to mental health: the role of vulnerability and resilience. JAMA Psychiatry 74 (11), pp. 1112-1119. ISSN 2168-622X.

Papageorgiou, K.A. and Ronald, Angelica (2017) The genetic basis of psychological traits in infancy: implications for understanding the causes of developmental psychopathology. In: Williams, D. and Centifanti, L. (eds.) The Wiley-Blackwell Handbook of Developmental Psychopathology. New York, U.S.: Wiley-Blackwell. ISBN 9781118554463.

Janecka, M. and Haworth, C.M.A. and Ronald, Angelica and Krapohl, E. and Happé, F. and Mill, J. and Schalkwyk, L.C. and Fernandes, C. and Reichenberg, A. and Rijsdijk, F. (2017) Paternal age alters social development in offspring. Journal of the American Academy of Child and Adolescent Psychiatry 56 (5), pp. 383-390. ISSN 0890-8567.

Stergiakouli, E. and Davey Smith, G. and Martin, J. and Skuse, D.H. and Viechtbauer, W. and Ring, S.M. and Ronald, Angelica and Evans, D.E. and Fisher, S.E. and Thapar, A. and St Pourcain, B. (2017) Shared genetic influences between dimensional ASD and ADHD symptoms during child and adolescent development. Molecular Autism 8 (1), ISSN 2040-2392.

Willfors, C. and Carlsson, T. and Anderlid, B.-M. and Nordgren, A. and Kostrzewa, E. and Berggren, S. and Ronald, Angelica and Kuja-Halkola, R. and Tammimies, K. and Bolte, S. (2017) Medical history of discordant twins and environmental etiologies of autism. Translational Psychiatry 7 , e1014. ISSN 2158-3188.

Hosang, G. and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2017) Characterization and structure of hypomania in a British nonclinical adolescent sample. Journal of Affective Disorders 207 , pp. 228-235. ISSN 0165-0327.

Taylor, Mark J. and Freeman, D. and Ronald, Angelica (2016) Dimensional psychotic experiences in adolescence: Evidence from a taxometric study of a community-based sample. Psychiatry Research 241 , pp. 35-42. ISSN 0165-1781.

Micalizzi, L. and Ronald, Angelica and Saudino, K.J. (2016) A genetically informed cross-lagged analysis of autistic-like traits and affective problems in early childhood. Journal of Abnormal Child Psychology 44 (5), pp. 937-947. ISSN 0091-0627.

Taylor, M. and Lichtenstein, P. and Larsson, H. and Anckarsäter, H. and Greven, C.U. and Ronald, Angelica (2016) Is there a female protective effect against ADHD? Evidence from two representative twin samples. Journal of the American Academy of Child and Adolescent Psychiatry 55 (6), 504-512.e2. ISSN 0890-8567.

Robinson, E.B. and St Pourcain, B. and Anttila, V. and Kosmicki, J. and Bulik-­‐Sullivan, B. and Grove, J. and Maller, J. and Samocha, K.E. and Sanders, S. and Ripke, S. and Martin, J. and Hollegaard, M.V. and Werge, T. and Hougaard, D.M. and iPSYCH-­‐SSI-­‐Broad Autism Group, A. and Neale, B.M. and Evans, D.M. and Skuse, D. and Mortensen, P.B. and Børglum, A.D. and Ronald, Angelica and Davey Smith, G. and Daly, M.J. (2016) Genetic risk for autism spectrum disorders and neuropsychiatric variation in the general population. Nature Genetics 48 (5), pp. 552-555. ISSN 1061-4036.

Shakoor, Sania and Zavos, H. and Haworth, C.M.A. and McGuire, P. and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2016) Association between stressful life events and psychotic experiences in adolescence: evidence for gene-environment correlations. British Journal of Psychiatry 208 (6), pp. 532-538. ISSN 0007-1250.

Zavos, H.M.S. and Eley, T.E. and McGuire, P. and Plomin, R. and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2016) Shared etiology of psychotic experiences and depressive symptoms in adolescence: a longitudinal twin study. Schizophrenia Bulletin 42 (5), pp. 1197-1206. ISSN 0586-7614.

Tick, B. and Colvert, E. and McEwen, F. and Stewart, C. and Woodhouse, E. and Gillan, N. and Hallett, V. and Lietz, S. and Garnett, T. and Simonoff, E. and Ronald, Angelica and Bolton, P. and Happé, F. and Rijsdijk, F. (2016) Autism Spectrum Disorders and other mental health problems: exploring etiological overlaps and phenotypic causal associations. Journal of the American Academy of Child & Adolescent Psychiatry 55 (2), pp. 106-113. ISSN 0890-8567.

McEwen, F.S. and Stewart, C.S. and Colvert, E. and Woodhouse, E. and Curran, S. and Gillan, N. and Hallett, V. and Lietz, S. and Garnett, T. and Ronald, Angelica and Murphy, D.G.M. and Happé, F. and Bolton, P. (2016) Diagnosing Autism Spectrum Disorder in community settings using the development and well-being assessment: validation in a UK population-based twin sample. Journal of Child Psychology and Psychiatry 57 (2), pp. 161-170. ISSN 0021-9630.

Pinto, R. and Rijsdijk, F. and Ronald, Angelica and Asherson, P. and Kuntsi, J. (2016) The genetic overlap of Attention-Deficit/Hyperactivity Disorder and Autistic-like traits: an investigation of individual symptom scales and cognitive markers. Journal of Abnormal Child Psychology 44 (2), pp. 335-345. ISSN 0091-0627.

Thomas, Michael S.C. and Forrester, N.A. and Ronald, Angelica (2016) Multi-scale modeling of gene-behavior associations in an artificial neural network model of cognitive development. Cognitive Science 40 (1), pp. 51-99. ISSN 1551-6709.

Jones, A. and O’Nions, E. and Tick, B. and Rijsdijk, F. and Happé, F. and Plomin, R. and Ronald, Angelica and Viding, E. (2015) Examining the genetic and environmental associations between autistic social and communication deficits and psychopathic callous-unemotional traits. PLoS One 10 (9), e0134331. ISSN 1932-6203.

Sieradzka, D. and Power, R.A. and Freeman, D. and Cardno, A.G. and Dudbridge, F. and Ronald, Angelica (2015) Heritability of individual psychotic experiences captured by common genetic variants in a community sample of adolescents. Behavior Genetics 45 (5), pp. 493-502. ISSN 0001-8244.

Taylor, M.J. and Charman, T. and Ronald, Angelica (2015) Where are the strongest associations between autistic traits and traits of ADHD? Evidence from a community-based twin study. European Child & Adolescent Psychiatry 24 (9), pp. 1129-1138. ISSN 1018-8827.

Taylor, M. J. and Gregory, A. M. and Freeman, D. and Ronald, Angelica (2015) Do sleep disturbances and psychotic-like experiences in adolescence share genetic and environmental influences? Journal of Abnormal Psychology 124 (3), pp. 674-684. ISSN 0021-843X.

Shakoor, Sania and Zavos, H. and McGuire, P. and Cardno, A.G. and Freeman, D. and Ronald, Angelica (2015) Psychotic experiences are linked to cannabis use in adolescents in the community because of common underlying environmental risk factors. Psychiatry Research 227 (2-3), pp. 144-151. ISSN 0165-1781.

Papageorgiou, K.A. and Farroni, Teresa and Johnson, Mark H. and Smith, Tim J. and Ronald, Angelica (2015) Individual differences in newborn visual attention associate with temperament and behavioral difficulties in later childhood. Scientific Reports 5 , p. 11264. ISSN 2045-2322.

Shakoor, Sania and McGuire, P. and Cardno, A.G. and Freeman, D. and Plomin, R. and Ronald, Angelica (2015) A shared genetic propensity underlies experiences of bullying victimization in late childhood and self-rated paranoid thinking in adolescence. Schizophrenia Bulletin 41 (3), pp. 754-763. ISSN 0586-7614.

Ronald, Angelica (2015) Recent quantitative genetic research on psychotic experiences: new approaches to old questions. Current Opinion in Behavioral Sciences 2 , pp. 81-88. ISSN 2352-1546.

Colvert, E. and Tick, B. and McEwen, F. and Stewart, C. and Curran, S.R. and Woodhouse, E. and Gillan, N. and Hallett, V. and Lietz, S. and Garnett, T. and Ronald, Angelica and Plomin, R. and Rijsdijk, F. and Happé, F. and Bolton, P. (2015) Heritability of autism spectrum disorder in a UK population-based twin sample. JAMA Psychiatry 72 (5), pp. 415-423. ISSN 2168-622X.

Taylor, M.J. and Robinson, E.B. and Happé, F. and Bolton, P. and Freeman, D. and Ronald, Angelica (2015) A longitudinal twin study of the association between childhood autistic traits and psychotic experiences in adolescence. Molecular Autism 6 (1), ISSN 2040-2392.

Taylor, M.J. and Charman, T. and Robinson, E.B. and Hayiou-Thomas, M.E. and Happé, F. and Dale, P.S. and Ronald, Angelica (2014) Language and traits of autism spectrum conditions: evidence of limited phenotypic and etiological overlap. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 165 (7), pp. 587-595. ISSN 1552-4841.

Zavos, H. and Freedman, D. and Haworth, C. and McGuire, P. and Plomin, R. and Cardno, A.G. and Ronald, Angelica (2014) Consistent etiology of severe, frequent psychotic experiences and milder, less frequent manifestations: a twin study of specific psychotic experiences in adolescence. JAMA Psychiatry 71 (9), pp. 1049-1057. ISSN 2168-622X.

Papageorgiou, Kostas A. and Smith, Tim J. and Wu, Rachel and Johnson, Mark H. and Kirkham, Natasha Z. and Ronald, Angelica (2014) Individual differences in infant fixation duration relate to attention and behavioral control in childhood. Psychological Science 25 (7), pp. 1371-1379. ISSN 0956-7976.

Ronald, Angelica and Sieradzka, D. and Cardno, A.G. and Haworth, C. and McGuire, P. and Freeman, D. (2014) Characterization of psychotic experiences in adolescence using the Specific Psychotic Experiences Questionnaire (SPEQ): findings from a study of 5000 16-year-old twins. Schizophrenia Bulletin 40 (4), pp. 868-877. ISSN 0586-7614.

Willfors, C. and Poltrago, L. and Berggren, S. and Coco, C. and Anckarsäter, H. and Lichtenstein, P. and Ronald, Angelica and Bölte, S. (2014) On the role of non-shared environment for executive functioning in ADHD: a twin-differences design study. International Journal of Developmental Disabilities 60 (3), pp. 163-173. ISSN 2047-3869.

O'nions, E. and Viding, E. and Greven, C.U. and Ronald, Angelica and Happé, F. (2014) Pathological Demand Avoidance (PDA): exploring the behavioural profile. Autism 18 (5), pp. 538-544. ISSN 1362-3613.

St Pourcain, B. and Haworth, C.M.A. and Davis, O.S.P. and Wang, K. and Timpson, N.J. and Evans, D.M. and Kemp, John P. and Ronald, Angelica and Price, T.S and Meaburn, Emma L. and Ring, S.M. and Golding, J. and Hakonarson, H. and Plomin, R. and Davey Smith, G. (2014) Heritability and genome‐wide analyses of problematic peer relationships during childhood and adolescence. Human Genetics 134 (6), pp. 539-551. ISSN 0340-6717.

Bölte, S. and Berggren, S. and Norberg, J. and Poltrago, L. and Mevel, K. and Coco, C. and Fransson, P. and Borg, J. and Sitnikov, R. and Toro, R. and Tammimies, K. and Anderlid, B.-A. and Nordgren, A. and Falk, A. and Meyer, U. and Kere, J. and Landén, M. and Dalman, C. and Ronald, Angelica and Anckarsäter, H. and Lichtenstein, P. (2014) The Roots of Autism and ADHD Twin Study in Sweden (RATSS). Twin Research and Human Genetics 17 (03), pp. 164-176. ISSN 1832-4274.

Bölte, S. and Willfors, C. and Berggren, S. and Norberg, J. and Poltrago, L. and Mevel, K. and Coco, C. and Fransson, P. and Borg, J. and Sitnikov, R. and Toro, R. and Tammimies, K. and Anderlid, B.-M. and Nordgren, A. and Falk, A. and Meyer, U. and Kere, J. and Landén, M. and Dalman, C. and Ronald, Angelica and Anckarsäter, H. and Lichtenstein, P. (2014) The roots of autism and ADHD twin study in Sweden (RATSS). Twin Research and Human Genetics 17 (03), pp. 164-176. ISSN 1832-4274.

Ronald, Angelica and Larsson, H. and Anckarsäter, H. and Lichtenstein, P. (2014) Symptoms of autism and ADHD: a Swedish twin study examining their overlap. Journal of Abnormal Psychology 123 (2), pp. 440-451. ISSN 0021-843X.

Scherff, Aline and Taylor, M. and Eley, T.C. and Happé, F. and Charman, T. and Ronald, Angelica (2014) What causes internalising traits and autistic traits to co-occur in adolescence? A community-based twin study. Journal of Abnormal Child Psychology 42 (4), pp. 601-610. ISSN 0091-0627.

Sieradzka, D. and Power, R.A. and Freedman, D. and Cardno, A.G. and McGuire, P. and Plomin, R. and Meaburn, Emma L. and Ronald, Angelica (2014) Are genetic risk factors for psychosis also associated with dimension-specific psychotic experiences in adolescence? PLoS One , ISSN 1932-6203.

Wong, C.C.Y. and Meaburn, Emma L. and Ronald, Angelica and Price, T.S and Jeffries, A.R. and Schalkwyk, L.C. and Plomin, R. and Mill, J. (2014) Methylomic analysis of monozygotic twins discordant for autism spectrum disorder and related behavioural traits. Molecular Psychiatry 19 (4), pp. 495-503. ISSN 1359-4184.

Holmboe, Karla and Rijsdijk, F. and Hallett, V. and Happé, F. and Plomin, R. and Ronald, Angelica (2014) Strong genetic influences on the stability of autistic traits in childhood. Journal of the American Academy of Child and Adolescent Psychiatry 53 (2), pp. 221-230. ISSN 0890-8567.

Nguyen, C. and Ronald, Angelica (2014) Are autism spectrum disorders comparable in boys and girls? An examination of sex differences in behaviour, cognition and psychopathology in a predominantly low functioning sample. Scandinavian Journal of Child and Adolescent Psychiatry and Psychology 2 (2), pp. 55-65. ISSN 2245-8875.

Rhee, S.H. and Ronald, Angelica, eds. (2014) Behavior genetics of psychopathology. Advances in Behavior Genetics 2. New York, U.S.: Springer. ISBN 9781461495086.

Ronald, Angelica and Hoekstra, R.A. (2014) Progress in understanding the causes of autism spectrum disorders and autistic traits: twin studies from 1977 to the present day. In: Ronald, Angelica and Rhee, S.H. (eds.) Behavior Genetics of Psychopathology. Advances in Behavior Genetics 2. New York, U.S.: Springer, pp. 33-65. ISBN 9781461495086.

Thomas, Michael S.C. and Forrester, Neil A. and Ronald, Angelica (2013) Modeling socioeconomic status effects on language development. Developmental Psychology 49 (12), pp. 2325-2343. ISSN 0012-1649.

Hallett, V. and Ronald, Angelica and Colvert, E. and Ames, C. and Woodhouse, E. and Lietz, S. and Garnett, T. and Gillan, N. and Rijsdijk, F. and Scahill, L. and Bolton, P. and Happé, F. (2013) Exploring anxiety symptoms in a large-scale twin study of children with autism spectrum disorders, their co-twins and controls. Journal of Child Psychology and Psychiatry 54 (11), pp. 1176-1185. ISSN 0021-9630.

Taylor, M.J. and Charman, T. and Robinson, E.B. and Plomin, R. and Happé, F. and Asherson, P. and Ronald, Angelica (2013) Developmental associations between traits of autism spectrum disorder and attention-deficit/hyperactivity disorder: a genetically-informative, longitudinal twin study. Psychological Medicine 43 (08), pp. 1735-1746. ISSN 0033-2917.

Robinson, E.B. and Lichtenstein, P. and Anckarsäter, H. and Happé, F. and Ronald, Angelica (2013) Examining and interpreting the female protective effect against autistic behavior. Proceedings of the National Academy of Sciences of the United States of America 110 (13), pp. 5258-5262. ISSN 0027-8424.

Papageorgiou, K.A. and Ronald, Angelica (2013) "He who sees things grow from the beginning will have the finest view of them": a systematic review of genetic studies on psychological traits in infancy. Neuroscience & Biobehavioral Reviews 37 (8), pp. 1500-1517. ISSN 0149-7634.

Dworzynski, K. and Ronald, Angelica and Bolton, P. and Happé, F. (2012) How different are girls and boys above and below the diagnostic threshold for Autism Spectrum Disorders? Journal of the American Academy of Child and Adolescent Psychiatry 51 (8), pp. 788-797. ISSN 0890-8567.

Hallett, V. and Ronald, Angelica and Rijsdijk, F. and Happé, F. (2012) Disentangling the associations between autistic-like and internalizing traits: a community based twin study. Journal of Abnormal Child Psychology 40 (5), pp. 815-827. ISSN 0091-0627.

Robinson, E.B. and Koenen, K.C. and McCormick, M.C. and Munir, K. and Hallett, V. and Happé, F. and Plomin, R. and Ronald, Angelica (2012) A multivariate twin study of autistic traits in 12-year-olds: testing the fractionable autism triad hypothesis. Behavior Genetics 42 (2), pp. 245-255. ISSN 0001-8244.

Robinson, E.B. and Koenen, K.C. and McCormick, M.C. and Munir, K. and Hallett, V. and Happé, F. and Plomin, R. and Ronald, Angelica (2011) Evidence that autistic traits show the same etiology in the general population and at the quantitative extremes (5%, 2.5%, and 1%). Archives of General Psychiatry 68 (11), pp. 1113-1121. ISSN 0003-990X.

Ronald, Angelica (2011) Is the child ‘father of the Man’? Evaluating the stability of genetic influences across development. Developmental Science 14 (6), pp. 1471-1478. ISSN 1363-755x.

Curran, S. and Dworzynski, K. and Happé, F. and Ronald, Angelica and Allison, C. and Baron-Cohen, S. and Brayne, C. and Bolton, P.F. (2011) No major effect of twinning on autistic traits. Autism Research 4 (5), pp. 377-382. ISSN 1939-3792.

Ronald, Angelica and Larsson, H. and Anckarsäter, H. and Lichtenstein, P. (2011) A twin study of autism symptoms in Sweden. Molecular Psychiatry 16 (10), pp. 1039-1047. ISSN 1359-4184.

Whitehouse, A.J.O. and Hickey, M. and Ronald, Angelica (2011) Are autistic traits in the general population stable across development? PLoS One 6 (8), ISSN 1932-6203.

Ronald, Angelica and Hoekstra, R.A. (2011) Autism spectrum disorders and autistic traits: a decade of new twin studies. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 156B (3), pp. 255-74. ISSN 1552-4841.

Ronald, Angelica and Pennell, C.E. and Whitehouse, A.J.O. (2011) Prenatal maternal stress associated with ADHD and autistic traits in early childhood. Frontiers in Psychology 1 (223), ISSN 1664-1078.

Ronald, Angelica (2011) Is the child 'father of the Man': evaluating the stability of genetic influences across development. Developmental Science 14 (6), pp. 1471-8. ISSN 1363-755x.

Moruzzi, S. and Ogliari, A. and Ronald, Angelica and Happé, F. and Battaglia, M. (2011) The nature of covariation between autistic traits and clumsiness: a twin study in a general population sample. Journal of Autism and Developmental Disorders 41 (12), pp. 1665-1674. ISSN 0162-3257.

Hallett, V. and Ronald, Angelica and Rijsdijk, F. and Happé, F. (2010) Association of autistic-like and internalizing traits during childhood: a longitudinal twin study. American Journal of Psychiatry 167 (7), pp. 809-817. ISSN 0002-953X.

Ronald, Angelica and Edelson, L.R. and Asherson, P. and Saudino, K.J. (2010) Exploring the relationship between autistic-like traits and ADHD behaviors in early childhood: findings from a community twin study of 2-year-olds. Journal of Abnormal Child Psychology 38 (2), pp. 185-196. ISSN 0091-0627.

Ronald, Angelica and Happé, F. and Dworzynski, K. and Bolton, P. and Plomin, R. (2010) Exploring the relation between prenatal and neonatal complications and later autistic-Like features in a representative community sample of twins. Child Development 81 (1), pp. 166-182. ISSN 0009-3920.

Ronald, Angelica and Butcher, L.M. and Docherty, S.J. and Davis, O.S.P. and Schalkwyk, L.C. and Craig, I.W. and Plomin, R. (2010) Response to comment by Stuart Macgregor. Behavior Cognition 40 (1), p. 48. ISSN 0001-8244.

Ronald, Angelica and Butcher, L.M. and Docherty, S.J. and Davis, O.S.P. and Schalkwyk, L.C. and Craig, I.W. and Plomin, R. (2010) A genome-wide association study of social and non-social autistic-like traits in the general population using pooled DNA, 500 K SNP microarrays and both community and diagnosed autism replication samples. Behavior Genetics 40 (1), pp. 31-45. ISSN 0001-8244.

Ronald, Angelica and Hoekstra, R.A. and Happé, F. and Baron-Cohen, S. (2010) Limited genetic covariance between autistic traits and intelligence: findings from a longitudinal twin study. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 153b (5), pp. 994-1007. ISSN 1552-4841.

Ronald, Angelica and Lundstrom, S. and Haworth, C. and Carlström, E. and Gillberg, C. and Mill, J. and Råstam, M. and Hultman, C. and Anckarsäter, H. and Plomin, R. and Lichtenstein, P. and Reichenberg, A. (2010) Trajectories leading to autism spectrum disorders are affected by paternal age: findings from two nationally representative twin studies. Journal of Child Psychology and Psychiatry 51 (7), pp. 850-856. ISSN 0021-9630.

Hoekstra, R.A. and Happé, F. and Baron-Cohen, S. and Ronald, Angelica (2009) Association between extreme autistic traits and intellectual disability: insights from a general population twin study. British Journal of Psychiatry 195 (6), pp. 531-536. ISSN 0007-1250.

Jones, A.P. and Larsson, H. and Ronald, Angelica and Rijsdijk, F. and Busfield, P. and Mcmillan, A. and Plomin, R. and Viding, E. (2009) Phenotypic and aetiological associations between psychopathic tendencies, autistic traits, and emotion attribution. Criminal Justice and Behavior 36 (11), pp. 1198-1212. ISSN 0093-8548.

Vital, P.M. and Ronald, Angelica and Wallace, G.L. and Happé, F. (2009) Relationship between special abilities and autistic-like traits in a large population-based sample of 8-year-olds. Journal of Child Psychology and Psychiatry and Allied Disciplines 50 (9), pp. 1093-1101. ISSN 0021-9630.

Dworzynski, K. and Happé, F. and Bolton, P. and Ronald, Angelica (2009) Relationship between symptom domains in autism spectrum disorders: a population based twin study. Journal of Autism and Developmental Disorders 39 (8), pp. 1197-1210. ISSN 0162-3257.

Hallett, V. and Ronald, Angelica and Happé, F. (2009) Investigating the association between autistic-like and internalizing traits in a community-based twin sample. Journal of the American Academy of Child and Adolescent Psychiatry 48 (6), pp. 618-627. ISSN 0890-8567.

Hallett, V. and Ronald, Angelica and Rijsdijk, F. and Eley, T.C. (2009) Phenotypic and genetic differentiation of anxiety-related behaviors in middle childhood. Depression and Anxiety 26 (4), pp. 316-324. ISSN 1091-4269.

Happé, F. and Ronald, Angelica (2008) The 'Fractionable Autism Triad': a review of evidence from behavioural, genetic, cognitive and neural research. Neuropsychology Review 18 (4), pp. 287-304. ISSN 1040-7308.

Ronald, Angelica and Happé, F. and Plomin, R. (2008) A twin study investigating the genetic and environmental aetiologies of parent, teacher and child ratings of autistic-like traits and their overlap. European Child & Adolescent Psychiatry 17 (8), pp. 473-483. ISSN 1018-8827.

Hoekstra, R.A. and Ronald, Angelica and Happé, F. and Baron-Cohen, S. and Plomin, R. (2008) Genetic influences on extreme autistic traits and intellectual impairment: overlap and specificity. Behavior Genetics 38 (6), pp. 630-631. ISSN 0001-8244.

Ronald, Angelica and Simonoff, E. and Kuntsi, J. and Asherson, P. and Plomin, R. (2008) Evidence for overlapping genetic influences on autistic and ADHD behaviours in a community twin sample. Journal of Child Psychology and Psychiatry and Allied Disciplines 49 (5), pp. 535-542. ISSN 0021-9630.

Dworzynski, K. and Ronald, Angelica and Hayiou-Thomas, M.E. and McEwan, F. and Happé, F. and Bolton, P. and Plomin, R. (2008) Developmental path between language and autistic-like impairments: a twin study. Infant and Child Development 17 (2), pp. 121-136. ISSN 1099-0917.

Dworzynski, K. and Ronald, Angelica and Hayiou-Thomas, M. and Rijskijk, F. and Happé, F. and Bolton, P. and Plomin, R. (2007) Aetiological relationship between language performance and autistic-like traits in childhood: a twin study. International Journal of Language and Communication Disorders 42 (3), pp. 273-292. ISSN 1368-2822.

McLoughlin, G. and Ronald, Angelica and Kuntsi, J. and Asherson, P. and Plomin, R. (2007) Genetic support for the dual nature of attention deficit hyperactivity disorder: substantial genetic overlap between the inattentive and hyperactive-impulsive components. Journal of Abnormal Child Psychology 35 (6), pp. 999-1008. ISSN 0091-0627.

Minnis, H. and Reekie, J. and Young, D. and O’Connor, T. and Ronald, Angelica and Gray, A. and Plomin, R. (2007) Genetic, environmental and gender influences on attachment disorder behaviours. British Journal of Psychiatry 190 (6), pp. 490-495. ISSN 0007-1250.

Ronald, Angelica and Viding, E. and Happé, F. and Plomin, R. (2007) Individual differences in theory of mind ability in middle childhood and links with verbal ability and autistic traits: a twin study. Social Neuroscience 1 (3-4), pp. 412-425. ISSN 1747-0919.

McEwen, F. and Happé, F. and Bolton, P. and Ronald, Angelica and Rijsdijk, F. and Plomin, R. (2007) Origins of individual differences in imitation: links with language, pretend play, and rudimentary theory of mind in two-year-old twins. Child Development 78 (2), pp. 474-492. ISSN 0009-3920.

Ronald, Angelica (2007) Scientists reveal that autism and hyperactivity have the same cause. British Neuroscience Association Bulletin 56 , ISSN 1475-8679.

Ronald, Angelica and Happé, F. and Bolton, P. and Butcher, L.M. and Price, T.S. and Wheelwright, S. and Baron-Cohen, S. and Plomin, R. (2006) Genetic heterogeneity between the three components of the autism spectrum: a twin study. Journal of the American Academy of Child and Adolescent Psychiatry 45 (6), pp. 691-699. ISSN 0890-8567.

Ronald, Angelica and Happé, F. and Plomin, R. and Baron-Cohen, S. and Knickmeyer, R.C. and Belmonte, M.K. (2006) Genetic research into autism. [Letter]

Ronald, Angelica and Happé, F. and Price, T.S. and Baron-Cohen, S. and Plomin, R. (2006) Phenotypic and genetic overlap between autistic traits at the extremes of the general population. Journal of the American Academy of Child and Adolescent Psychiatry 45 (10), pp. 1206-1214. ISSN 0890-8567.

Happé, F. and Ronald, Angelica and Plomin, R. (2006) Time to give up on a single explanation for autism. Nature Neuroscience 9 , pp. 1218-1220. ISSN 1546-1726.

Kuntsi, J. and Rijsdijk, F. and Ronald, Angelica and Asherson, P. and Plomin, R. (2005) Genetic influences on the stability of attention-deficit/hyperactivity disorder symptoms from early to middle childhood. Biological Psychiatry 57 (6), pp. 647-654. ISSN 0006-3223.

Ronald, Angelica and Happé, F. and Hughes, C. and Plomin, R. (2005) Nice and nasty theory of mind in preschool children: nature and nurture. Social Development 14 (4), pp. 664-684. ISSN 0961-205X.

Mill, J. and Xu, X. and Ronald, Angelica and Curran, S. and Price, T. and Knight, J. and Craig, I. and Sham, P. and Plomin, R. and Asherson, P. (2005) Quantitative trait locus analysis of candidate gene alleles associated with attention deficit hyperactivity disorder (ADHD) in five genes: DRD4, DAT1, DRD5, SNAP-25, and 5HT1B. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 133B (1), pp. 68-73. ISSN 1552-4841.

Saudino, K. and Ronald, Angelica and Plomin, R. (2005) The etiology of behavior problems in 7-year-old twins: substantial genetic influence and negligible shared environmental influence for parent ratings and ratings by same and different teachers. Journal of Abnormal Child Psychology 33 (1), pp. 113-130. ISSN 0091-0627.

Ronald, Angelica and Happé, F. and Plomin, R. (2005) The genetic relationship between individual differences in social and nonsocial behaviours characteristic of autism. Developmental Science 8 (5), pp. 444-458. ISSN 1363-755X.

Spinath, F.M. and Harlaar, N. and Ronald, Angelica and Plomin, R. (2004) Substantial genetic influence on mild mental impairment in early childhood. American Journal of Mental Retardation 109 (1), pp. 34-43. ISSN 0895-8017.

Soto-Faraco, S. and Ronald, Angelica and Spence, C. (2004) Tactile selective attention and body posture: assessing the multisensory contributions of vision and proprioception. Perception and Psychophysics 66 (7), pp. 1077-1094. ISSN 1943-3921.

Spinath, F.M. and Ronald, Angelica and Harlaar, N. and Price, T.S. and Plomin, R. (2003) Phenotypic g early in life: on the etiology of general cognitive ability in a large population sample of twin children aged 2–4 years. Intelligence 31 (2), pp. 195-210. ISSN 0160-2896.

Ronald, Angelica and Spinath, F.M. and Plomin, R. (2002) The aetiology of high cognitive ability in early childhood. High Ability Studies 13 (2), pp. 103-114. ISSN 1359-8139.