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Hire Dr. Nicola B.

United Kingdom

USD 120 /hr

Freelance research scientist with expertise in sleep, circadian rhythms, research design, data analysis and statistics

Profile Summary

Nicola Barclay, PhD, is a Sleep Scientist and Psychologist, with extensive experience of sleep research, research design, big data and education. She was a Lecturer in Sleep Medicine at the Sleep and Circadian Neuroscience Institute, University of Oxford from 2016 to 2021, training clinicians in the assessment, diagnosis and treatment of sleep and circadian disorders. Prior to this appointment, Nicola was Associate Director of the Northumbria Centre for Sleep Research at Northumbria University, Newcastle upon Tyne, UK from 2011 to 2016. In 2011, she completed her PhD at the University of London, focussing on Quantitative and Molecular Genetic Approaches to Understanding Sleep Quality and Diurnal Preference, where she was awarded the 'Rising Researcher' award, 2011. She received a first-class honours degree in Psychology from the University of Sussex. She has more recently worked as a Data Scientist in industry, exploring the use of big data to understand trajectories of health and disease. Nicola has published over 50 peer-reviewed publications on sleep, and has extensive experience of educating clinical professionals in sleep medicine and research, as well as expertise in statistical methodologies and research study design.

Subject Matter Expertise

• ★ Circadian Rhythm Research
• ★ Sleep Medicine
• ☆ Neuropsychology
• ☆ Data Analysis
• ☆ Health Data Analysis
• ☆ Psychology
• ☆ Health Psychology

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Clinical Trial Documentation, Technical Writing, Copywriting, Newswriting

Research Market Research, User Research, Meta-Research, Feasibility Study, Fact Checking, Gap Analysis, Gray Literature Search, Systematic Literature Review, Secondary Data Collection

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Statistical Analysis, Data Visualization, Big Data Analytics, Data Insights

Product Development Formulation, Product Evaluation

Work Experience

Senior Data Scientist

IQVIA

September 2021 - January 2022

Departmental Lecturer in Sleep Medicine

Oxford University

July 2016 - September 2021

Senior Lecturer in Psychology

Northumbria University

September 2011 - June 2016

Education

PhD Psychology

Goldsmiths College, University of London

September 2008 - August 2011

MSc Research Methods in Psychology

Goldsmiths College, University of London

September 2007 - September 2008

BA Psychology

University of Sussex

September 2004 - July 2007

Certifications

• Chartered Psychologist CPsycol

  British Psychological Society

  https://portal.bps.org.uk/Psychologist-Search/Chartered-Member-List/Member-Details?entityid=7ab822e2-16d4-eb11-bacb-000d3ad57563

  February 2022 - Present

• SQL for Data Science

  IBM

  https://courses.edx.org/certificates/250ab49cdf124d739fee5ac2d89fbafc

  September 2020 - Present

• Professional Certificate in Data Science

  Harvard X

  https://credentials.edx.org/credentials/83e596ab652d45ed80bd2bd31fb7a8a9/

  December 2019 - Present

Publications

JOURNAL ARTICLE

Nicola L. Barclay, Desi Kocevska, Wichor M. Bramer, Eus J. W. Van Someren, Philip Gehrman(2021). The heritability of insomnia: A meta‐analysis of twin studies . Genes, Brain and Behavior. Wiley

Kocevska, D., Barclay, N.L., Bramer, W.M., Gehrman, P.R., Van Someren, E.J.W.(2021). Heritability of sleep duration and quality: A systematic review and meta-analysis . Sleep Medicine Reviews. 59.

Ellis, J.G., Perlis, M.L., Espie, C.A., Grandner, M.A., Bastien, C.H., Barclay, N.L., Altena, E., Gardani, M.(2021). The natural history of insomnia: Predisposing, precipitating, coping, and perpetuating factors over the early developmental course of insomnia . Sleep. 44. (9).

Madrid-Valero, J.J., Barclay, N.L., Rowe, R., Perach, R., Buysse, D.J., Ordoñana, J.R., Eley, T.C., Gregory, A.M.(2021). Association between symptoms of sleep apnea and problem behaviors in young adult twins and siblings . Psychological Medicine. 51. (7). p. 1175-1182.

Nicola L Barclay, Susan Rowley, Anna Robson, Umair Akram, Andriy Myachykov(2020). Sleep duration, sleep variability, and impairments of visual attention . Quarterly Journal of Experimental Psychology. 73. (6). p. 868--880. {SAGE} Publications

Elder, G.J., Wetherell, M.A., Pollet, T.V., Barclay, N.L., Ellis, J.G.(2020). Experienced demand does not affect subsequent sleep and the cortisol awakening response . Nature and Science of Sleep. 12. p. 537-543.

Elder, G.J., Barclay, N.L., Wetherell, M.A., Ellis, J.G.(2018). Anticipated next-day demand affects the magnitude of the cortisol awakening response, but not subjective or objective sleep . Journal of Sleep Research. 27. (1). p. 47-55.

Akram, U., Beattie, L., Ypsilanti, A., Reidy, J., Robson, A., Chapman, A.J., Barclay, N.L.(2018). Sleep-related attentional bias for tired faces in insomnia: Evidence from a dot-probe paradigm . Behaviour Research and Therapy. 103. p. 18-23.

Akram, U., Barclay, N.L., Milkins, B.(2018). Sleep-related attentional bias in insomnia: Time to examine moderating factors? . Frontiers in Psychology. 9. (DEC).

Akram, U., Milkins, B., Ypsilanti, A., Reidy, J., Lazuras, L., Stevenson, J., Notebaert, L., Barclay, N.L.(2018). The therapeutic potential of attentional bias modification training for insomnia: Study protocol for a randomised controlled trial . Trials. 19. (1).

Denis, D., Akhtar, R., Holding, B.C., Murray, C., Panatti, J., Claridge, G., Sadeh, A., Barclay, N.L., O'Leary, R., Maughan, B., et al.(2017). Externalizing behaviors and callous-unemotional traits: Different associations with sleep quality . Sleep. 40. (8).

Akram, U., Ellis, J.G., Myachykov, A., Barclay, N.L.(2017). Preferential attention towards the eye-region amongst individuals with insomnia . Journal of Sleep Research. 26. (1). p. 84-91.

Akram, U., Ellis, J.G., Myachykov, A., Chapman, A.J., Barclay, N.L.(2017). Anxiety mediates the relationship between multidimensional perfectionism and insomnia disorder . Personality and Individual Differences. 104. p. 82-86.

Barclay, N.L., Myachykov, A.(2017). Sustained wakefulness and visual attention: moderation by chronotype . Experimental Brain Research. 235. (1). p. 57-68.

Gregory, A.M., Rijsdijk, F.V., Eley, T.C., Buysse, D.J., Schneider, M.N., Parsons, M., Barclay, N.L.(2016). A longitudinal twin and sibling study of associations between insomnia and depression symptoms in young adults . Sleep. 39. (11). p. 1985-1992.

Barclay, N.L., Rowe, R., O'Leary, R., Bream, D., Gregory, A.M.(2016). Longitudinal Stability of Genetic and Environmental Influences on the Association between Diurnal Preference and Sleep Quality in Young Adult Twins and Siblings . Journal of Biological Rhythms. 31. (4). p. 375-386.

Elder, G.J., Ellis, J.G., Barclay, N.L., Wetherell, M.A.(2016). Assessing the daily stability of the cortisol awakening response in a controlled environment . BMC Psychology. 4. (1).

Akram, U., Ellis, J.G., Myachykov, A., Barclay, N.L.(2016). Misperception of tiredness in young adults with insomnia . Journal of Sleep Research. 25. (4). p. 466-474.

Akram, U., Ellis, J.G., Barclay, N.L.(2015). Anxiety mediates the relationship between perfectionism and insomnia symptoms: A longitudinal study . PLoS ONE. 10. (10).

Barclay, N.L., Gehrman, P.R., Gregory, A.M., Eaves, L.J., Silberg, J.L.(2015). The heritability of insomnia progression during childhood/adolescence: Results from a longitudinal twin study . Sleep. 38. (1). p. 109-118.

Gotts, Z.M., Ellis, J.G., Deary, V., Barclay, N., Newton, J.L.(2015). The association between daytime napping and cognitive functioning in chronic fatigue syndrome . PLoS ONE. 10. (1).

Ellis, J.G., Barclay, N.L.(2014). Cognitive behavior therapy for insomnia: State of the science or a stated science? . Sleep Medicine. 15. (8). p. 849-850.

Barclay, N.L., Watson, N.F., Buchwald, D., Goldberg, J.(2014). Moderation of genetic and environmental influences on diurnal preference by age in adult twins . Chronobiology International. 31. (2). p. 222-231.

Parsons, M.J., Lester, K.J., Barclay, N.L., Archer, S.N., Nolan, P.M., Eley, T.C., Gregory, A.M.(2014). Polymorphisms in the circadian expressed genes PER3 and ARNTL2 are associated with diurnal preference and GNβ3 with sleep measures . Journal of Sleep Research. 23. (5). p. 595-604.

Deary, V., Ellis, J.G., Wilson, J.A., Coulter, C., Barclay, N.L.(2014). Simple snoring: Not quite so simple after all? . Sleep Medicine Reviews. 18. (6). p. 453-462.

Elder, G.J., Wetherell, M.A., Barclay, N.L., Ellis, J.G.(2014). The cortisol awakening response - Applications and implications for sleep medicine . Sleep Medicine Reviews. 18. (3). p. 215-224.

Barclay, Nicola L.(2013). Quantitative genetic research on sleep: A review of normal sleep, sleep disturbances and associated emotional, behavioural, and health-related difficulties . Sleep Medicine Reviews. 17. (1). p. 29-40.

Parsons, M.J., Lester, K.J., Barclay, N.L., Nolan, P.M., Eley, T.C., Gregory, A.M.(2013). Replication of Genome-Wide association studies (GWAS) loci for sleep in the British G1219 cohort . American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 162. (5). p. 431-438.

Barclay, Nicola L.(2013). Monozygotic Twin Differences in Non-shared Environmental Factors Associated with Chronotype . Journal of Biological Rhythms. 28. (1). p. 51-61.

Barclay, N.L., Ellis, J.G.(2013). Sleep-related attentional bias in poor versus good sleepers is independent of affective valence . Journal of Sleep Research. 22. (4). p. 414-421.

McAdams, Tom A.(2013). The Genesis 12-19 (G1219) Study: A Twin and Sibling Study of Gene-Environment Interplay and Adolescent Development in the UK . Twin Research and Human Genetics. 16. (1). p. 134-143.

Zavos, Helena M. S.(2012). ANXIETY SENSITIVITY IN ADOLESCENCE AND YOUNG ADULTHOOD: THE ROLE OF STRESSFUL LIFE EVENTS, 5HTTLPR AND THEIR INTERACTION . Depression and Anxiety. 29. (5). p. 400-408.

Barclay, Nicola L.(2012). Genetic Influences Contribute To Neurobehavioral Response To Acute Sleep Deprivation . Sleep. 35. (9). p. 1191-1192.

Barclay, N. L.(2012). A MONOZYGOTIC TWIN DIFFERENCES APPROACH TO IDENTIFYING SPECIFIC NON-SHARED ENVIRONMENTAL INFLUENCES ON DIURNAL PREFERENCE. Sleep. 35. p. A70.

Barclay, Nicola L.(2012). Nonshared Environmental Influences on Sleep Quality: A Study of Monozygotic Twin Differences . Behavior Genetics. 42. (2). p. 234-244.

Barclay, N. L.(2012). Sleep-related attentional bias in poor versus good sleepers is independent of affective valence. Journal of Sleep Research. 21. p. 184.

Neale, L. F.(2012). THE ANTICIPATION AND CONSEQUENCES OF AN ACUTE STRESSOR ON SLEEP QUALITY. Sleep. 35. p. A225.

Gregory, Alice M.(2011). Associations between sleep quality and anxiety and depression symptoms in a sample of young adult twins and siblings . Journal of Psychosomatic Research. 71. (4). p. 250-255.

Barclay, Nicola L.(2011). Dependent negative life events and sleep quality: An examination of gene-environment interplay . Sleep Medicine. 12. (4). p. 403-409.

Barclay, N. L.(2011). ETIOLOGICAL MODERATION OF DIURNAL PREFERENCE BY AGE IN A POPULATION BASED SAMPLE OF ADULT TWINS. Sleep. 34. p. A62-A63.

Barclay, Nicola L.(2011). Sleep Quality and Diurnal Preference in a Sample of Young Adults: Associations With 5HTTLPR, PER3, and CLOCK 3111 . American Journal of Medical Genetics Part B-Neuropsychiatric Genetics. 156B. (6). p. 681-690.

Barclay, N. L.(2011). Associations between diurnal preference, sleep quality and externalizing behaviours: a behavioural genetic analysis . Psychological Medicine. 41. (5). p. 1029-1040.

Barclay, Nicola L.(2010). DIURNAL PREFERENCE AND SLEEP QUALITY: SAME GENES? A STUDY OF YOUNG ADULT TWINS . Chronobiology International. 27. (2). p. 278-296.

Barclay, Nicola L.(2010). Genetic and Environmental Influences on Different Components of the Pittsburgh Sleep Quality Index and their Overlap. Sleep. 33. (5). p. 659-668.

Barclay, N.L., Eley, T.C., Buysse, D.J., Rijsdijk, F.V., Gregory, A.M.(2010). Genetic and environmental influences on different components of the Pittsburgh sleep quality index and their overlap . Sleep. 33. (5). p. 659-668.

Barclay, N. L.(2010). The presence of a perseverative iterative style in poor vs. good sleepers . Journal of Behavior Therapy and Experimental Psychiatry. 41. (1). p. 18-23.

Gregory, Alice M.(2009). Too stressed to sleep. Psychologist. 22. (8). p. 676-677.

Gregory, A.M., Barclay, N.L.(2009). Too stressed to sleep . Psychologist. 22. (8). p. 676-677.

BOOK CHAPTER

Gregory, A.M., Parsons, M.J., Barclay, N.L., Gehrman, P., O'Leary, R.E.(2016). Genetic research on sleep, sleep disturbances and associated difficulties . Behavioural Genetics for Education. p. 185-204.

Barclay, N.L., Gregory, A.M.(2014). Sleep and psychopathology: Quantitative and molecular genetic research on comorbidity . Behavior Genetics of Psychopathology. p. 121-152.

BOOK

Barclay, N.L., Gregory, A.M.(2014). Sleep in childhood and adolescence: age-specific sleep characteristics, common sleep disturbances and associated difficulties . Current Topics in Behavioral Neurosciences. 16. p. 337-365.