![Kate Langley](https://profiles-cardiff.imgix.net/attachments/3019?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Overview
Research summary
My research focuses on neurodiversity and child and adolescent mental health—particularly ADHD, autism, conduct problems, and co‑occurring emotional difficulties—by examining how cognitive mechanisms, genetics, and early developmental factors shape outcomes across development using large administrative and epidemiological datasets . Through integrating clinical, service‑use, and population‑level data and embedding co‑production with people with lived experience, my work ensures both scientific rigour and real‑world relevance.
Teaching summary
I am Director of the MSc in Children's Psychological Conditions (https://www.cardiff.ac.uk/study/postgraduate/taught/courses/course/childrens-psychological-conditions-msc) and teach across both Undergraduate and Postgraduate courses within the School of Psychology.
Publication
2025
- Horstmann, L. et al. 2025. Attention Deficit Hyperactivity Disorder and other neurodevelopmental traits are associated with impact on functioning among children in the general population. JCPP Advances 5 (4) e70004. (10.1002/jcv2.70004)
- Barclay, I. et al. 2025. Investigating the reasons behind a later or missed diagnosis of Attention-Deficit/Hyperactivity Disorder in young people: a population cohort study. JCPP Advances 5 (3) e12301. (10.1002/jcv2.12301)
- Morris, D. et al., 2025. Content of attention-deficit hyperactivity disorder psychoeducation packages: scoping review. BJPsych Bulletin (10.1192/bjb.2025.10121)
- Williams, T. et al. 2025. An item-level systematic review of the presentation of ADHD in females. Neuroscience and Behavioural Reviews 171 106064. (10.1016/j.neubiorev.2025.106064)
2024
- Martin, J. et al. 2024. Sex differences in ADHD diagnosis and clinical care: A national study of population healthcare records in Wales. Journal of Child Psychology and Psychiatry 65 (12), pp.1648-1658. (10.1111/jcpp.13987)
- Anning, K. L. et al. 2024. Cool and hot executive function problems in young children: Linking self-regulation processes to emerging clinical symptoms. European Child and Adolescent Psychiatry 33 , pp.2705-2718. (10.1007/s00787-023-02344-z)
- Anning, K. L. et al. 2024. Inattention symptom severity and cognitive processes in children at risk of ADHD: The moderating role of separation anxiety. Child Neuropsychology 30 (2), pp.264-288. (10.1080/09297049.2023.2190964)
- Agha, S. S. et al., 2024. Young adult ADHD symptoms in the general population and neurocognitive impairment. Journal of Attention Disorders 28 (1), pp.89-98. (10.1177/10870547231201870)
2023
- Gosling, C. J. et al., 2023. Association between relative age at school and persistence of ADHD in prospective studies: an individual participant data meta-analysis. The Lancet Psychiatry 10 (12), pp.922-933. (10.1016/S2215-0366(23)00272-9)
- Wang, S. et al., 2023. Rare X-linked variants carry predominantly male risk in Autism, Tourette Syndrome, and ADHD. Nature Communications 14 8077. (10.1038/s41467-023-43776-0)
- Anning, K. L. et al. 2023. Dimensional associations between executive function processes and symptoms of ADHD, ASD, oppositional defiance and anxiety in young school-referred children. Cortex 167 , pp.132-147. (10.1016/j.cortex.2023.06.005)
- Langley, K. et al. 2023. Can a nation-wide e-cohort of ADHD and ASD in childhood be established using Welsh routinely available datasets?. BMJ Open 13 e071851. (10.1136/bmjopen-2023-071851)
- Lewis, K. et al. 2023. Sleep disturbances in ADHD: Investigating the contribution of polygenic liability for ADHD and sleep-related phenotypes. European Child and Adolescent Psychiatry 32 , pp.1253-1261. (10.1007/s00787-021-01931-2)
- Lynham, A. J. et al. 2023. DRAGON-Data: A platform and protocol for integrating genomic and phenotypic data across large psychiatric cohorts. BJPsych Open 9 (2) e32. (10.1192/bjo.2022.636)
- Broughton, T. et al. 2023. Relative age in the school year and risk of mental health problems in childhood, adolescence, and young adulthood. Journal of Child Psychology and Psychiatry 64 (1), pp.185-196. (10.1111/jcpp.13684)
- Martin, J. et al. 2023. Investigating direct and indirect genetic effects in attention-deficit/hyperactivity disorder using parent-offspring trios. Biological Psychiatry 93 (1), pp.37-44. (10.1016/j.biopsych.2022.06.008)
2022
- Riglin, L. et al. 2022. Early manifestations of genetic liability for ADHD, autism and schizophrenia at ages 18 and 24 months. JCPP Advances 2 (3) e12093. (10.1002/jcv2.12093)
- Tobarra‐Sanchez, E. et al., 2022. Preschool development, temperament and genetic liability as early markers of childhood ADHD: A cohort study. JCPP Advances 2 (3) e12099. (10.1002/jcv2.12099)
- Riglin, L. et al. 2022. “Late-onset” ADHD symptoms in young adulthood: is this the same as child-onset ADHD?. Journal of Attention Disorders 26 (10), pp.1271-1282. (10.1177/10870547211066486)
- Adegboye, D. et al. 2022. Understanding de novo onset of anxiety during COVID-19: Pre-pandemic socio-emotional functioning in vulnerable children. JCPP Advances 2 (2) e12076. (10.1002/jcv2.12076)
- Dingsdale, H. et al. 2022. Cord serum brain-derived neurotrophic factor levels at birth associate with temperament outcomes at one year. Journal of Psychiatric Research 150 47-53. (10.1016/j.jpsychires.2022.03.009)
- Langley, K. , Martin, J. and Thapar, A. 2022. Genetics of attention deficit hyperactivity disorder. In: Stanford, S. C. and Sciberras, E. eds. New Discoveries in the Behavioral Neuroscience of Attention-Deficit Hyperactivity Disorder. Vol. 57, Springer Nature. , pp.243-268. (10.1007/7854_2022_338)
- Langley, K. , Martin, J. and Thapar, A. 2022. Genetics of attention-deficit hyperactivity disorder. In: Stanford, S. C. and Sciberras, E. eds. Current Topics in Behavioral Neurosciences. Berlin, Heidelberg: Springer. , pp.1-26. (10.1007/7854_2022_338)
- Cooper, M. et al. 2022. How to do it: the neurological consultation with an autistic patient. Practical Neurology 22 , pp.120-125. (10.1136/practneurol-2020-002856)
- Turnock, A. , Langley, K. and Jones, C. R. 2022. Understanding stigma in autism: a narrative review and theoretical model. Autism in Adulthood 4 (1), pp.76-91. (10.1089/aut.2021.0005)
- Colonna, S. et al. 2022. Investigating the associations between irritability and hot and cool executive functioning in those with ADHD. BMC Psychiatry 22 166. (10.1186/s12888-022-03818-1)
- Riglin, L. et al. 2022. Assessment of age-at-onset criterion for adult attention-deficit hyperactivity disorder. British Journal of Psychiatry 220 (2), pp.73-75. (10.1192/bjp.2021.122)
- Warne, N. et al. 2022. Collecting genetic samples and linked mental health data from adolescents in schools: protocol co-production and a mixed-methods pilot of feasibility and acceptability. BMJ Open 12 (2) e049283. (10.1136/bmjopen-2021-049283)
- Wimberley, T. et al., 2022. Early-life injuries and the development of attention-deficit/hyperactivity disorder. Journal of Clinical Psychiatry 83 (1) 21m14033. (10.4088/JCP.21m14033)
- van Goozen, S. H. M. , Langley, K. and Hobson, C. W. 2022. Childhood antisocial behavior: a neurodevelopmental problem. Annual Review of Psychology 73 , pp.353-377. (10.1146/annurev-psych-052621-045243)
2021
- Eyre, O. et al. 2021. Validation of the short Mood and Feelings Questionnaire in young adulthood. Journal of Affective Disorders 294 , pp.883-888. (10.1016/j.jad.2021.07.090)
- Martin, J. et al. 2021. Sex differences in anxiety and depression in children with ADHD investigating genetic liability and comorbidity. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 186 (7), pp.412-422. (10.1002/ajmg.b.32842)
- Riglin, L. et al. 2021. Variable emergence of Autism Spectrum Disorder symptoms from childhood to early adulthood. American Journal of Psychiatry 178 (8), pp.752-760. (10.1176/appi.ajp.2020.20071119)
- Riglin, L. et al. 2021. Investigating the validity of the strengths and difficulties questionnaire to assess ADHD in young adulthood. Psychiatry Research 301 113984. (10.1016/j.psychres.2021.113984)
- Riglin, L. et al. 2021. Investigating attention‐deficit hyperactivity disorder and autism spectrum disorder traits in the general population: What happens in adult life?. Journal of Child Psychology and Psychiatry 62 (4), pp.449-457. (10.1111/jcpp.13297)
- Adegboye, D. et al. 2021. Understanding why the COVID-19 pandemic-related lockdown increases mental health difficulties in vulnerable young children. Journal of Child Psychology and Psychiatry Advances 1 (1) e12005. (10.1111/jcv2.12005)
2020
- Agha, S. S. et al. 2020. Parent psychopathology and neurocognitive functioning in children with ADHD. Journal of Attention Disorders 24 (13), pp.1836-1846. (10.1177/1087054717718262)
- Wimberle, T. et al., 2020. Genetic liability to ADHD and substance use disorders in individuals with ADHD. Addiction 115 (7), pp.1368-1377. (10.1111/add.14910)
- Martin, J. et al. 2020. A brief report: de novo copy number variants in children with attention deficit hyperactivity disorder. Translational Psychiatry 10 135. (10.1038/s41398-020-0821-y)
- Hales, C. et al. 2020. Controlled antenatal thyroid screening II: Effect of treating maternal sub-optimal thyroid function on child behaviour. Journal of Clinical Endocrinology and Metabolism 105 (3) dgz098. (10.1210/clinem/dgz098)
- Fry, C. , Langley, K. and Shelton, K. 2020. Executive functions in homeless young people: working memory impacts on short-term housing outcomes. Child Neuropsychology 26 (1), pp.27-53. (10.1080/09297049.2019.1628930)
- Caye, A. et al., 2020. A risk calculator to predict adult Attention-Deficit/Hyperactivity Disorder: generation and external validation in three birth cohorts and one clinical sample. Epidemiology and Psychiatric Sciences 29 e37. (10.1017/S2045796019000283)
2019
- Lee, P. H. et al., 2019. Genomic relationships, novel loci, and pleiotropic mechanisms across eight psychiatric disorders. Cell 179 (7), pp.1469-1482.e11. (10.1016/j.cell.2019.11.020)
2018
- Demontis, D. et al., 2018. Discovery of the first genome-wide significant risk loci for attention-deficit/hyperactivity disorder. Nature Genetics 51 , pp.63-75. (10.1038/s41588-018-0269-7)
- Cooper, M. et al. 2018. Investigating late-onset ADHD: a population cohort investigation. Journal of Child Psychology and Psychiatry 59 (10), pp.1105-1113. (10.1111/jcpp.12911)
- Airdrie, J. N. et al. 2018. Facial emotion recognition and eye gaze in attention-deficit/hyperactivity disorder with and without comorbid conduct disorder. Journal of the American Academy of Child and Adolescent Psychiatry 57 (8), pp.561-570. (10.1016/j.jaac.2018.04.016)
- Rice, F. et al. 2018. Identifying the contribution of prenatal risk factors to offspring development and psychopathology: What designs to use and a critique of literature on maternal smoking and stress in pregnancy. Development and Psychopathology 30 (03), pp.1107-1128. (10.1017/S0954579418000421)
- Anttila, V. et al., 2018. Analysis of shared heritability in common disorders of the brain. Science 360 (6395) eaap8757. (10.1126/science.aap8757)
- Hurt, L. et al. 2018. Understanding and improving the care pathway for children with autism. International Journal of Health Care Quality Assurance 32 (1), pp.208-223. (10.1108/IJHCQA-08-2017-0153)
2017
- Riglin, L. et al. 2017. Investigating the genetic underpinnings of early-life irritability. Translational Psychiatry 7 e1241. (10.1038/tp.2017.212)
- Eyre, O. et al. 2017. Irritability in ADHD: Associations with depression liability. Journal of Affective Disorders 215 , pp.281-287. (10.1016/j.jad.2017.03.050)
- Langley, K. et al. 2017. An investigation of changes in children′s mental health in Wales between 2007/2008 and 2012/2013. Social Psychiatry and Psychiatric Epidemiology 52 , pp.639-642. (10.1007/s00127-017-1378-9)
- Agha, S. S. et al. 2017. Maternal psychopathology and offspring clinical outcome: a four-year follow-up of boys with ADHD. European Child and Adolescent Psychiatry 26 (2), pp.253-262. (10.1007/s00787-016-0873-y)
- Gustavson, K. et al., 2017. Smoking in pregnancy and child ADHD. Pediatrics 139 (2), pp.e20162509. (10.1542/peds.2016-2509)
- Fry, C. , Langley, K. and Shelton, K. H. 2017. A systematic review of cognitive functioning among young people who have experienced homelessness, foster care, or poverty. Child Neuropsychology 23 (8), pp.907-934. (10.1080/09297049.2016.1207758)
2016
- Riglin, L. et al. 2016. Association of genetic risk variants with attention-deficit/hyperactivity disorder trajectories in the general population. JAMA Psychiatry 73 (12), pp.1285-1292. (10.1001/jamapsychiatry.2016.2817)
- Thapar, A. et al. 2016. Psychiatric gene discoveries shape evidence on ADHD's biology. Molecular Psychiatry 21 , pp.1202-1207. (10.1038/mp.2015.163)
- Northover, C. et al. 2016. Cortisol levels at baseline and under stress in adolescent males with Attention-Deficit Hyperactivity Disorder, with or without comorbid Conduct Disorder. Psychiatry Research 242 , pp.130-136. (10.1016/j.psychres.2016.05.052)
- Riglin, L. et al. 2016. Profiling depression in childhood and adolescence: the role of conduct problems. Journal of Child Psychology and Psychiatry 57 (4), pp.481-490. (10.1111/jcpp.12465)
- van Goozen, S. H. M. et al. 2016. Identifying mechanisms that underlie links between COMT genotype and aggression in male adolescents with ADHD. Journal of Child Psychology and Psychiatry 57 (4), pp.472-480. (10.1111/jcpp.12464)
- Sellers, R. et al. 2016. Examining whether offspring psychopathology influences illness course in mothers with recurrent depression using a high-risk longitudinal sample. Journal of Abnormal Psychology 125 (2), pp.256-266. (10.1037/abn0000080)
- Mooney, M. A. et al., 2016. Pathway analysis in attention deficit hyperactivity disorder: an ensemble approach. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 171 (6), pp.815-826. (10.1002/ajmg.b.32446)
2015
- Northover, C. et al. 2015. Emotion regulation in adolescent males with attention-deficit hyperactivity disorder: testing the effects of comorbid conduct disorder. Brain Sciences 5 (3), pp.369-386. (10.3390/brainsci5030369)
- Northover, C. et al. 2015. Pain sensitivity in adolescent males with Attention-Deficit/Hyperactivity Disorder: Testing for associations with conduct disorder and callous and unemotional traits. PloS ONE 10 (7) e0134417. (10.1371/journal.pone.0134417)
- Stergiakouli, E. et al., 2015. Shared genetic influences between attention-deficit/hyperactivity disorder (ADHD) traits in children and clinical ADHD. Journal of the American Academy of Child and Adolescent Psychiatry 54 (4), pp.322-327. (10.1016/j.jaac.2015.01.010)
- Martin, J. et al. 2015. The relative contribution of common and rare genetic variants to ADHD. Translational Psychiatry 5 e506. (10.1038/tp.2015.5)
2014
- Cooper, M. , Langley, K. and Thapar, A. 2014. Antenatal Acetaminophen use and attention-deficit/hyperactivity disorder. JAMA Pediatrics 168 (4), pp.306-307. (10.1001/jamapediatrics.2013.5292)
- Langley, K. and Thapar, A. 2014. Commentary: Maternal pre-pregnancy BMI and offspring ADHD: a lesson in the importance of testing causal pathways. International Journal of Epidemiology 43 (1), pp.91-93. (10.1093/ije/dyt275)
- Cooper, M. et al. 2014. Autistic traits in children with ADHD index clinical and cognitive problems. European Child & Adolescent Psychiatry 23 (1), pp.23-24. (10.1007/s00787-013-0398-6)
2013
- Agha, S. S. et al. 2013. Are parental ADHD problems associated with a more severe clinical presentation and greater family adversity in children with ADHD?. European Child & Adolescent Psychiatry 22 (6), pp.369-377. (10.1007/s00787-013-0378-x)
- Ahuja, A. et al. 2013. Intellectual disability in children with attention deficit hyperactivity disorder. The Journal of Pediatrics 163 (3), pp.890-895.e1. (10.1016/j.jpeds.2013.02.043)
- Hamshere, M. L. et al. 2013. High loading of polygenic risk for ADHD in children with comorbid aggression. American Journal of Psychiatry 170 (8), pp.909-916. (10.1176/appi.ajp.2013.12081129)
- Hamshere, M. L. et al. 2013. Shared polygenic contribution between childhood attention-deficit hyperactivity disorder and adult schizophrenia. British Journal of Psychiatry 203 (2), pp.107-111. (10.1192/bjp.bp.112.117432)
- Telford, C. et al., 2013. Estimating the costs of ongoing care for adolescents with attention-deficit hyperactivity disorder. Social Psychiatry and Psychiatric Epidemiology 48 (2), pp.337-344. (10.1007/s00127-012-0530-9)
- Thapar, A. et al. 2013. Practitioner review: what have we learnt about the causes of ADHD?. Journal of Child Psychology and Psychiatry 54 (1), pp.3-16. (10.1111/j.1469-7610.2012.02611.x)
- Thapar, A. , Langley, K. and Muñoz-Solomando, A. 2013. The ADHD debate: being mindful of complexity and wary of reductionist explanations and polarization: Commentary on 'A social relational critique of the biomedical definition and treatment of ADHD; ethical, practical and political implications'. Journal of Family Therapy 35 (2), pp.219-223. (10.1111/j.1467-6427.2012.00608.x)
2012
- Langley, K. et al. 2012. Maternal and paternal smoking during pregnancy and risk of ADHD symptoms in offspring: testing for intrauterine effects. American Journal of Epidemiology 176 (3), pp.261-268. (10.1093/aje/kwr510)
- Stergiakouli, E. et al. 2012. Investigating the contribution of common genetic variants to the risk and pathogenesis of ADHD. American Journal of Psychiatry 169 (2), pp.186-194. (10.1176/appi.ajp.2011.11040551)
- Williams, N. M. et al. 2012. Genome-wide analysis of copy number variants in attention deficit hyperactivity disorder: the role of rare variants and duplications at 15q13.3. American Journal of Psychiatry 169 (2), pp.195-204. (10.1176/appi.ajp.2011.11060822)
2011
- Hinney, A. et al., 2011. Genome-wide association study in German patients with attention deficit/hyperactivity disorder. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 156 (8), pp.888-897. (10.1002/ajmg.b.31246)
- Hassan, A. et al., 2011. Prevalence of bipolar disorder in children and adolescents with attention-deficit hyperactivity disorder. British Journal of Psychiatry 198 (3), pp.195-198. (10.1192/bjp.bp.110.078741)
- Langley, K. et al. 2011. Clinical and cognitive characteristics of children with attention-deficit hyperactivity disorder, with and without copy number variants. British Journal of Psychiatry 199 (5), pp.398-403.
2010
- Williams, N. M. et al. 2010. Rare chromosomal deletions and duplications in attention-deficit hyperactivity disorder: a genome-wide analysis. The Lancet 376 (9750), pp.1401-1408. (10.1016/S0140-6736(10)61109-9)
- Langley, K. et al. 2010. Adolescent clinical outcomes for young people with attention-deficit hyperactivity disorder. British Journal of Psychiatry 196 (3), pp.235-240. (10.1192/bjp.bp.109.066274)
- Langley, K. et al. 2010. Genotype link with extreme antisocial behavior: The contribution of cognitive pathways. Archives of General Psychiatry 67 (12), pp.1317-1323. (10.1001/archgenpsychiatry.2010.163)
- Neale, B. M. et al., 2010. Meta-analysis of genome-wide association studies of attention-deficit/hyperactivity disorder. Journal of the American Academy of Child & Adolescent Psychiatry 49 (9), pp.884-897. (10.1016/j.jaac.2010.06.008)
- Thapar, A. et al. 2010. Response to: testing the association between smoking in pregnancy and attention-deficit/hyperactivity disorder in a novel design [Letter]. Biological psychiatry 68 (4), pp.e13-e14. (10.1016/j.biopsych.2010.01.032)
2009
- Thapar, A. et al. 2009. Prenatal smoking might not cause Attention-Deficit/Hyperactivity Disorder: Evidence from a novel design. Biological Psychiatry 66 (8), pp.722-727. (10.1016/j.biopsych.2009.05.032)
- Fowler, T. A. et al. 2009. Psychopathy trait scores in adolescents with childhood ADHD: the contribution of genotypes affecting MAOA, 5HTT and COMT activity. Psychiatric Genetics 19 (6), pp.312-319. (10.1097/YPG.0b013e3283328df4)
- Fowler, T. A. et al. 2009. Psychopathy traits in adolescents with childhood attention-deficit hyperactivity disorder. British Journal of Psychiatry 194 (1), pp.62-67. (10.1192/bjp.bp.107.046870)
- Langley, K. et al. 2009. Molecular genetic contribution to the developmental course of attention-deficit hyperactivity disorder. European Child & Adolescent Psychiatry 18 (1), pp.26-32. (10.1007/s00787-008-0698-4)
2008
- Ford, T. et al., 2008. Five years on: public sector service use related to mental health in young people with ADHD or hyperkinetic disorder five years after diagnosis. Child and Adolescent Mental Health 13 (3), pp.122-129. (10.1111/j.1475-3588.2007.00466.x)
- Brookes, K. J. et al., 2008. Differential dopamine receptor D4 allele association with ADHD dependent of proband season of birth. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 147B (1), pp.94-99. (10.1002/ajmg.b.30562)
- Caspi, A. et al., 2008. A replicated molecular genetic basis for subtyping antisocial behavior in children with attention-deficit/hyperactivity disorder. Archives of General Psychiatry 65 (2), pp.203-210. (10.1001/archgenpsychiatry.2007.24)
- Langley, K. et al. 2008. Testing for gene × environment interaction effects in attention deficit hyperactivity disorder and associated antisocial behavior. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 147B (1), pp.49-53. (10.1002/ajmg.b.30571)
2007
- Thapar, A. et al. 2007. Advances in genetic findings on attention deficit hyperactivity disorder. Psychological Medicine 37 (12), pp.1681-1692. (10.1017/S0033291707000773)
- Thapar, A. et al. 2007. The contribution of gene-environment interaction to psychopathology. Development and Psychopathology 19 (04), pp.989-1004. (10.1017/S0954579407000491)
- Langley, K. et al. 2007. Effects of low birth weight, maternal smoking in pregnancy and social class on the phenotypic manifestation of Attention Deficit Hyperactivity Disorder and associated antisocial behaviour: investigation in a clinical sample. BMC Psychiatry 7 (1), pp.26-26. (10.1186/1471-244X-7-26)
- Whittinger, N. et al. 2007. Clinical precursors of adolescent conduct disorder in children with attention-deficit/hyperactivity disorder. Journal of the American Academy of Child and Adolescent Psychiatry 46 (2), pp.179-187. (10.1097/01.chi.0000246066.00825.53)
- Thapar, A. et al. 2007. Gene-environment interplay in attention-deficit hyperactivity disorder and the importance of a developmental perspective. British Journal of Psychiatry 190 (1), pp.1-3. (10.1192/bjp.bp.106.027003)
- Thapar, A. et al. 2007. Promoting Measured Genes and Measured Environments: On the Importance of Careful Statistical Analyses and Biological Relevance—Reply [Letter]. Archives of General Psychiatry 64 (3), pp.378-379. (10.1001/archpsyc.64.3.378-b)
2006
- Thapar, A. et al. 2006. Refining the attention deficit hyperactivity disorder phenotype for molecular genetic studies. Molecular Psychiatry 11 (8), pp.714-20. (10.1038/sj.mp.4001831)
- Thapar, A. et al. 2006. Predictors of antisocial behaviour in children with attention deficit hyperactivity disorder. European Child & Adolescent Psychiatry 15 (2), pp.118-125. (10.1007/s00787-006-0511-1)
2005
- Langley, K. et al. 2005. Maternal smoking during pregnancy as an environmental risk factor for attention deficit hyperactivity disorder behaviour. A review.. Minerva Pediatrica 57 (6), pp.359-371.
- Langley, K. et al. 2005. No support for association between the dopamine transporter (DAT1) gene and ADHD. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 139B (1), pp.7-10. (10.1002/ajmg.b.30206)
- Thapar, A. et al. 2005. Catechol O-methyltransferase gene variant and birth weight predict early-onset antisocial behavior in children with attention-deficit/hyperactivity disorder. Archives of General Psychiatry 62 (11), pp.1275-1278. (10.1001/archpsyc.62.11.1275)
- Stevenson, J. et al., 2005. Attention deficit hyperactivity disorder with reading disabilities: preliminary genetic findings on the involvement of the ADRA2A gene. Journal of Child Psychology and Psychiatry 46 (10), pp.1081-1088. (10.1111/j.1469-7610.2005.01533.x)
- Turic, D. et al., 2005. A family based study implicates solute carrier family 1-member 3 (SLC1A3) gene in attention-deficit/hyperactivity disorder. Biological psychiatry 57 (11), pp.1461-1466. (10.1016/j.biopsych.2005.03.025)
- Turic, D. et al., 2005. A family based study of catechol-O-methyltransferase (COMT) and attention deficit hyperactivity disorder (ADHD).. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 133B (1), pp.64-67. (10.1002/ajmg.b.30123)
- Potter, R. , Langley, K. and Sakhuja, D. 2005. All things to all people: what referrers want from their child and adolescent mental health service. Psychiatric Bulletin 29 (7), pp.262. (10.1192/pb.29.7.262)
- Kent, L. et al., 2005. Association of the paternally transmitted copy of common Valine allele of the Val66Met polymorphism of the brain-derived neurotrophic factor (BDNF) gene with susceptibility to ADHD. Molecular Psychiatry 10 (10), pp.939-943. (10.1038/sj.mp.4001696)
- Langley, K. 2005. A genetic study of attention deficit hyperactivity disorder: examining environmental influences and phenotypic variation.. PhD Thesis , Cardiff University.
2004
- Fowler, T. A. et al., 2004. Early onset antisocial behaviour in children with ADHD is associated with a functional variant in the catechol-O-methyltransferase (COMT) gene [Abstract]. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 130B (1), pp.98-98. (10.1002/ajmg.b.30101)
- Mills, S. et al., 2004. No evidence of association between Catechol-O-Methyltransferase (COMT) Val(158)Met genotype and performance on neuropsychological tasks in children with ADHD: A case-control study. BMC Psychiatry 4 , pp.15-15. (10.1186/1471-244X-4-15)
- Turic, D. et al., 2004. Direct analysis of the genes encoding G proteins G alpha T2, G alpha o, G alpha Z in ADHD. American Journal of Medical Genetics 127B (1), pp.68-72. (10.1002/ajmg.b.20173)
- Langley, K. et al. 2004. Association of the dopamine D4 receptor gene 7-repeat allele with neuropsychological test performance of children with ADHD. American Journal of Psychiatry 161 (1), pp.133-138. (10.1176/appi.ajp.161.1.133)
- Holmes, J. et al., 2004. The Child Attention-Deficit Hyperactivity Disorder Teacher Telephone Interview (CHATTI): reliability and validity. British Journal of Psychiatry 184 (1), pp.74-78. (10.1192/bjp.184.1.74)
- Turic, D. et al. 2004. Follow-up of genetic linkage findings on chromosome 16p13: evidence of association of N-methyl-D aspartate glutamate receptor 2A gene polymorphism with ADHD. Molecular Psychiatry 9 (2), pp.169-173. (10.1038/sj.mp.4001387)
2003
- Lawson, D. C. et al., 2003. Association analysis of monoamine oxidase a and attention deficit hyperactivity disorder. American Journal of Medical Genetics 116B (1), pp.84-89. (10.1002/ajmg.b.10002)
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- Payton, A. et al., 2003. No evidence of association between HLA-DRB1 and attention deficit hyperactivity disorder.. Psychiatric Genetics 13 (3), pp.183-185.
- Thapar, A. et al. 2003. ADHD children with and without the dopamine D4 receptor 7-repeat allele: Evidence of differences in performance on neuropsychological tests. Behavior Genetics 33 (6), pp.721-721.
- Hawi, Z. et al., 2002. Serotonergic system and attention deficit hyperactivity disorder (ADHD): a potential susceptibility locus at the 5-HT(1B) receptor gene in 273 nuclear families from a multi-centre sample. Molecular Psychiatry 7 (7), pp.718-725. (10.1038/sj.mp.4001048)
- West, A. et al., 2002. Evidence to suggest biased phenotypes in children with Attention Deficit Hyperactivity Disorder from completely ascertained trios. Molecular Psychiatry 7 (9), pp.962-966. (10.1038/sj.mp.4001129)
Book sections
- Langley, K. , Martin, J. and Thapar, A. 2022. Genetics of attention deficit hyperactivity disorder. In: Stanford, S. C. and Sciberras, E. eds. New Discoveries in the Behavioral Neuroscience of Attention-Deficit Hyperactivity Disorder. Vol. 57, Springer Nature. , pp.243-268. (10.1007/7854_2022_338)
- Langley, K. , Martin, J. and Thapar, A. 2022. Genetics of attention-deficit hyperactivity disorder. In: Stanford, S. C. and Sciberras, E. eds. Current Topics in Behavioral Neurosciences. Berlin, Heidelberg: Springer. , pp.1-26. (10.1007/7854_2022_338)
Thesis
- Langley, K. 2005. A genetic study of attention deficit hyperactivity disorder: examining environmental influences and phenotypic variation.. PhD Thesis , Cardiff University.
Research
Research topics
My research focuses on neurodiversity and neurodivergence as well as child and adolescent mental health, with an emphasis on ADHD, autism, conduct problems, and co‑occurring emotional difficulties using dimensional and transdiagnostic approaches as well as clinical definitions. I am interested in the developmental course of ADHD and how presentation changes with age, the individual and societal impacts and benefits of continued ADHD behaviours and factors influencing such continuation.
My work examines the interplay between cognitive mechanisms, genetics and early developmental factors in shaping development and later outcomes, using large administrative and epidemiological datasets to build population‑level cohorts for research and to integrate clinical, service‑use, and developmental data.
Throughout my work, co‑production and the inclusion of people with lived experience ensures that the research is grounded in the realities, priorities, and needs of those it aims to benefit.
Teaching
I am a Fellow of the HEA (since 2016).
I currently teach on undergraduate and postgraduate courses across the School of Psychology.
I am Director of the MSc in Children’s Psychological Conditions, taking the lead on strategic and day-to-day elements of the course. I also teach on the Child Assessment Methods 1 (PST708), Neurodevelopmental Conditions 1: Neurobiology, for which I am module coordinator and coordinate the Dissertation module. I also supervise a number of dissertation projects.
I also coordinate and teach on the MSc Mental Health (Conversion) module on Neurodiversity and Neurodivergence and the UG Final year module on a similar topic.
Biography
Undergraduate education
2000: BA(Hons.) Psychology, Durham University (2:1)
Postgraduate education
2005: PhD, Cardiff University
Thesis title: “A genetic study of ADHD: Examining environmental influences and phenotypic variation”
2016: Postgraduate Certificate in Learning and teaching – Distinction 2015-2016, Cardiff University, UK
Employment
Following my undergraduate degree at Durham University, I started working as a Research Psychologist (2001-2003) with Prof Anita Thapar at the University of Wales College of Medicine (now Cardiff University School of Medicine) on a Wellcome Trust funded project investigating susceptibility genes for Attention Deficit Hyperactivity Disorder (ADHD). The project ignited my interest in mental health and understanding the genetic and environmental risk factors associated with such disorders.
This led to my embarking on a PhD, supervised by Prof Thapar and Prof Peter Holmans, investigating how genetic and environmental risk factors for ADHD influence the clinical presentation of the disorder and the interactions between these factors. My work was extended through a Wellcome Trust VIP Fellowship Award (2005-2006).
Whilst continuing to work in the field of genetic and other risk factors for ADHD and other childhood mental health problems, during my post-doctoral position at the School of Medicine (2006-2011), Cardiff University, I became interested in using natural experimental designs to investigate causal pathways between genetic, cognitive and social risk factors and childhood behaviour problems.
After working with Prof Nick Craddock as part of the team establishing the National Centre for Mental Health (NCMH), the first Biomedical Research Centre in Wales (2012-2013), I took up a lecturer post in the School of Psychology, Cardiff University, in August 2013 and was promoted to Senior Lecturer in 2017 and Reader in 2021.
Honours and awards
Awards/external committees
- 2018-2020: Member of Welsh Government T4CHYP Neurodevelopmental Steering Group
- 2015-current: Associate editor, BMC Psychiatry
- 2010-current: Advisory Board member, Journal of Child Psychology & Psychiatry
- 2009-current: Member of the MRC Centre for Neropsychiatric Genetics & Genomics
- 2005-2006: Wellcome Trust VIP Fellowship, Cardiff University
Graduate Member of the British Psychological Society; Member ADHD working group of International Psychiatric Genetics Consortium; Member Eunethydis European ADHD Network
Professional memberships
Professional Memberships
- British Psychological Society;
- ADHD working group of International Psychiatric Genetics Consortium;
- Eunethydis European ADHD Network
Supervisions
Postgraduate research interests
If you are interested in applying for a PhD, or for further information regarding my research, please contact me directly (contact details available on the 'Overview' page), or submit a formal application.
Current students
- Louise Horstmann (2021-2026, part-time), Thesis title: Understanding The Health Implications Of Using Different Definitions Of ADHD
- Isabella Barclay (2022-2025), Thesis title: Investigating reasons behind a delayed or missed diagnosis of ADHD in young people, and sex differences. Submitted. (Co-supervisor)
- Tamara Williams (2025-2029), Thesis title: Understanding Masking in ADHD
- Alice Velge (2025-2028), Thesis title: Understanding And Improving Support For Neurodivergent Students
Completed students
- Abbey Rowe, Awarded 2026, Thesis title: Exploring contextual secondary school influences on the mental health and wellbeing of adolescents with ADHD: a mixed methods study. (Co-supervisor)
- Kate Anning, Awarded 2023. Thesis title: Self-regulation difficulties in young children with cognitive, emotional and behavioural problems. (Co-supervisor)
- Thomas Broughton, Awarded 2023 Thesis title: Testing the role of relative age within school yer on mental health in children with neurodevelopmental vulnerability. (Co-supervisor)
- Lorna Ushaw, Awarded 2023,Thesis title: Optimizing adult mental health outcomes in children with neurodevelopmental problems: Interplay of social and genetic factors. (Co-supervisor)
- Rebecca Ellis Awarded 2021, Thesis title: Co-producing an intervention to improve care for children wtih Autism Spectrum Disorders: A cross-disciplinary mixed-methods study. (Co-supervisor)
- Silvia Colonna Awarded 2020, Thesis title: The importance of emotional self-control in persistent childhood ADHD.
- Charlotte Fry: Awarded 2018, Thesis title: Executive Functions, creativity and mental health in homeless young people: implications for housing outcome. (Co-supervisor)
- Zoe Williams: Awarded 2018, Thesis Title: The overlap between Attention-deficit/hyperactivity disorder and Autism Spectrum Disorder symptoms and thier association with reading skills and social cognition ability.
- Sharifah Shameem Syed Salim Agha: Awarded 2017, Thesis title: Exploring the role of parental psychopathology in a sample of children with ADHD: Investigating influences on child phenotype and the family environment
