Sleep, anxiety and challenging behaviour in children with intellectual disability and/or autism spectrum disorder

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Rzepecka, H., McKenzie, K., McClure, I., & Murphy, S. (2011). Sleep, anxiety and challenging behaviour in children with intellectual disability and/or autism spectrum disorder. Research in Developmental Disabilities, 32(6), 2758-2766. https://doi.org/10.1016/j.ridd.2011.05.034

Publication date: 28 Jun 2011 Added to AutiHub: 6 Jul 2026 Type: Article Article language: English
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4
Publication authors identified as autistic
1 / 4 (25.0%)
  1. Halina Rzepecka
  2. Karen McKenzie
  3. Iain McClure
  4. Shona Murphy *

Abstract

Children with an intellectual disability (ID) and/or autism spectrum disorder (ASD) are known to suffer from significantly more sleep problems, anxiety and challenging behaviour (CB) than typically developing children (TD), yet little is known about the relationship between these factors in the child ID/ASD population. The study aim was to examine these relationships. We hypothesised that there would be significant positive correlations between the three factors and that sleep problems and anxiety would predict a significant amount of the variance in levels of CB. Parental measures of sleep problems, anxiety and CB were completed by 187 parents of children with ID and/or ASD. Significant positive associations were found between the three factors. A hierarchical multiple regression showed that medication, sleep problems and anxiety accounted for 42% of the variance in CB, with a large effect size. These findings suggest that these relationships should be considered during clinical practice, particularly in the case of CB interventions where sleep problems and/or anxiety are also present.

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25 / 217 (11.5%)
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25 / 25 (100.0%)
Among linked cited-author occurrences only. Across all cited-author occurrences: 25 / 217 (11.5%). Distinct linked cited authors not identified as autistic: 14 / 14 (100.0%).
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  1. Eli Hering , Rachel Epstein , Sarit Elroy , Daisy R. Iancu , Nathanel Zelnik (1999). Sleep Patterns in Autistic Children . Journal of Autism and Developmental Disorders, 29(2), 143-147. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1023/a:1023092627223 OpenAlex: https://openalex.org/W63797899
    Crossref OpenAlex OpenCitations
  2. Dawn Adams , D. Allen (2001). Assessing the need for reactive behaviour management strategies in children with intellectual disability and severe challenging behaviour . Journal of Intellectual Disability Research, 45(4), 335-343. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.2001.00328.x OpenAlex: https://openalex.org/W2145073678
    Crossref OpenAlex OpenCitations
  3. L. B. BARTLETT , V. ROONEY , S. SPEDDING (1985). NOCTURNAL DIFFICULTIES IN A POPULATION OF MENTALLY HANDICAPPED CHILDREN . The British Journal of Mental Subnormality, 31(60), 54-59. Informa UK Limited.
    Type: Article DOI: 10.1179/bjms.1985.009 OpenAlex: https://openalex.org/W2319076012
    Crossref OpenAlex OpenCitations
  4. Barbara G. Tabachnick , Linda S. Fidell (1983). Using multivariate statistics .
    Type: Book OpenAlex: https://openalex.org/W1484864026
    OpenAlex
  5. Candice A. Alfano , Deborah C. Beidel , Samuel M. Turner , Daniel S. Lewin (2006). Preliminary evidence for sleep complaints among children referred for anxiety . Sleep Medicine, 7(6), 467-473. Elsevier BV.
    Type: Article DOI: 10.1016/j.sleep.2006.05.002 OpenAlex: https://openalex.org/W2058304328
    Crossref OpenAlex OpenCitations
  6. Gillian Baird , Emily Simonoff , Andrew Pickles , Susie Chandler , Tom Loucas , David Meldrum et al. (2006). Prevalence of disorders of the autism spectrum in a population cohort of children in South Thames: the Special Needs and Autism Project (SNAP) . The Lancet, 368(9531), 210-215. Elsevier BV.
    Type: Article DOI: 10.1016/s0140-6736(06)69041-7 OpenAlex: https://openalex.org/W2151524361
    Crossref OpenAlex OpenCitations
  7. Eric Emerson (2012). Clinical Psychology and People with Intellectual Disabilities . Wiley.
    Type: Book DOI: 10.1002/9781118404898 OpenAlex: https://openalex.org/W1502783518
    OpenAlex
  8. CANDICE A. ALFANO , GOLDA S. GINSBURG , JULIE NEWMAN KINGERY (2007). Sleep-Related Problems Among Children and Adolescents With Anxiety Disorders . Journal of the American Academy of Child & Adolescent Psychiatry, 46(2), 224-232. Elsevier BV.
    Type: Article DOI: 10.1097/01.chi.0000242233.06011.8e OpenAlex: https://openalex.org/W2079086889
    Crossref OpenAlex OpenCitations
  9. Ryan D. Honomichl , Beth L. Goodlin-Jones , Melissa Burnham , Erika Gaylor , Thomas F. Anders (2002). Sleep Patterns of Children with Pervasive Developmental Disorders . Journal of Autism and Developmental Disorders, 32(6), 553-561. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1023/a:1021254914276 OpenAlex: https://openalex.org/W1555898088
    Crossref OpenAlex OpenCitations
  10. David Allen , Dee Davies (2007). Challenging behaviour and psychiatric disorder in intellectual disability . Current Opinion in Psychiatry, 20(5), 450-455. Ovid Technologies (Wolters Kluwer Health).
    Type: Article DOI: 10.1097/yco.0b013e32826fb332 OpenAlex: https://openalex.org/W1970262928
    Crossref OpenAlex OpenCitations
  11. SIMON P. COURTMAN , D. MUMBY (2008). Children with learning disabilities . Pediatric Anesthesia, 18(3), 198-207. Wiley.
    Type: Article DOI: 10.1111/j.1460-9592.2007.02323.x OpenAlex: https://openalex.org/W1935821459
    Crossref OpenAlex OpenCitations
  12. Lisa A. Croen , Judith K. Grether , Steve Selvin (2002). Descriptive Epidemiology of Autism in a California Population: Who Is at Risk? Journal of Autism and Developmental Disorders, 32(3), 217-224. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1023/a:1015405914950 OpenAlex: https://openalex.org/W1581467677
    Crossref OpenAlex OpenCitations
  13. Hiie Allik , Jan-Olov Larsson , Hans Smedje (2006). Insomnia in school-age children with Asperger syndrome or high-functioning autism . BMC Psychiatry, 6(1), 18. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1186/1471-244x-6-18 OpenAlex: https://openalex.org/W1629338262
    Crossref OpenAlex OpenCitations
  14. LM PATZOLD , Amanda L. Richdale , Bruce J. Tonge (1998). An investigation into sleep characteristics of children with autism and Asperger’s Disorder . Journal of Paediatrics and Child Health, 34(6), 528-533. Wiley.
    Type: Article DOI: 10.1046/j.1440-1754.1998.00291.x OpenAlex: https://openalex.org/W1862157881
    Crossref OpenAlex OpenCitations
  15. (2002). Sleep disturbance in children and adolescents with disorders of development: Its significance and management. Journal of Child Psychology and Psychiatry, 43(6), 827-828. Wiley.
    Type: Article DOI: 10.1111/1469-7610.t01-4-00086 OpenAlex: https://openalex.org/W1607986006
    OpenAlex
  16. Aman (1994). Aberrant Behaviour Checklist-Community. Supplementary manual .
    Type: Other
    Crossref
  17. Andrew R. Arthur (2003). The emotional lives of people with learning disability . British Journal of Learning Disabilities, 31(1), 25-30. Wiley.
    Type: Article DOI: 10.1046/j.1468-3156.2003.00193.x OpenAlex: https://openalex.org/W2017840729
    Crossref OpenAlex OpenCitations
  18. J. L. Wallander , M. C. Dekker , H. M. Koot (2006). Risk factors for psychopathology in children with intellectual disability: a prospective longitudinal population‐based study . Journal of Intellectual Disability Research, 50(4), 259-268. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2005.00792.x OpenAlex: https://openalex.org/W2022595242
    Crossref OpenAlex OpenCitations
  19. Amanda L. Richdale , Andrew Francis , Susana Gavidia-Payne , Sue Cotton (2000). Stress, behaviour, and sleep problems in children with an intellectual disability . Journal of Intellectual & Developmental Disability, 25(2), 147-161. Informa UK Limited.
    Type: Article DOI: 10.1080/13269780050033562 OpenAlex: https://openalex.org/W2122019190
    Crossref OpenAlex OpenCitations
  20. B. L. Baker , L. L. McIntyre , J. Blacher , K. Crnic , C. Edelbrock , C. Low (2003). Pre‐school children with and without developmental delay: behaviour problems and parenting stress over time . Journal of Intellectual Disability Research, 47(4-5), 217-230. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.2003.00484.x OpenAlex: https://openalex.org/W2154865829
    Crossref OpenAlex OpenCitations
  21. Charles D. Hoffman , Dwight P. Sweeney , Muriel C. Lopez-Wagner , Danelle Hodge , Cindy Y. Nam , Betsy H. Botts (2008). Children With Autism . Focus on Autism and Other Developmental Disabilities, 23(3), 155-165. SAGE Publications.
    Type: Article DOI: 10.1177/1088357608316271 OpenAlex: https://openalex.org/W2120477604
    Crossref OpenAlex OpenCitations
  22. Johannes Rojahn , William J. Helsel (1991). The aberrant behavior checklist with children and adolescents with dual diagnosis . Journal of Autism and Developmental Disorders, 21(1), 17-28. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/bf02206994 OpenAlex: https://openalex.org/W2088090643
    Crossref OpenAlex OpenCitations
  23. Turid Suzanne Berg-Nielsen , Arne Vikan , Alv A. Dahl (2002). Parenting Related to Child and Parental Psychopathology: A Descriptive Review of the Literature . Clinical Child Psychology and Psychiatry, 7(4), 529-552. SAGE Publications.
    Type: Article DOI: 10.1177/1359104502007004006 OpenAlex: https://openalex.org/W2147431316
    Crossref OpenAlex OpenCitations
  24. Sigan L. Hartley , D. M. Sikora , R. McCoy (2008). Prevalence and risk factors of maladaptive behaviour in young children with Autistic Disorder . Journal of Intellectual Disability Research, 52(10), 819-829. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2008.01065.x OpenAlex: https://openalex.org/W1977796487
    Crossref OpenAlex OpenCitations
  25. Sarah L Blunden , Ron D Chervin (2008). Sleep problems are associated with poor outcomes in remedial teaching programmes: A preliminary study . Journal of Paediatrics and Child Health, 44(5), 237-242. Wiley.
    Type: Article DOI: 10.1111/j.1440-1754.2007.01237.x OpenAlex: https://openalex.org/W2012219402
    Crossref OpenAlex OpenCitations
  26. Judith A. Owens , Anthony Spirito , Melissa McGuinn (2000). The Children's Sleep Habits Questionnaire (CSHQ): Psychometric Properties of A Survey Instrument for School-Aged Children . Sleep, 23(8), 1-9. Oxford University Press (OUP).
    Type: Article DOI: 10.1093/sleep/23.8.1d OpenAlex: https://openalex.org/W2146721597
    Crossref OpenAlex OpenCitations
  27. Kerrin L. Braithwaite , Amanda L. Richdale (2000). Functional communication training to replace challenging behaviors across two behavioral outcomes . Behavioural Interventions, 15(1), 21.
    Type: Article DOI: 10.1002/(sici)1099-078x(200001/03)15:1 OpenAlex: https://openalex.org/W1980300662 Crossref: not found DataCite: not found
    Crossref OpenAlex OpenCitations
  28. Sue Cotton , Amanda L. Richdale (2006). Brief report: Parental descriptions of sleep problems in children with autism, Down syndrome, and Prader–Willi syndrome . Research in Developmental Disabilities, 27(2), 151-161. Elsevier BV.
    Type: Article DOI: 10.1016/j.ridd.2004.12.003 OpenAlex: https://openalex.org/W2061039214
    Crossref OpenAlex OpenCitations
  29. Elisabeth M. Dykens (2007). Psychiatric and behavioral disorders in persons with Down syndrome . Mental Retardation and Developmental Disabilities Research Reviews, 13(3), 272-278. Wiley.
    Type: Article DOI: 10.1002/mrdd.20159 OpenAlex: https://openalex.org/W1982658236
    Crossref OpenAlex OpenCitations
  30. Joel D. Bregman , James F. Leckman , Sharon I. Ort (1988). Fragile X syndrome: genetic predisposition to psychopathology . Journal of Autism and Developmental Disorders, 18(3), 343-354. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/bf02212191 OpenAlex: https://openalex.org/W2036170866
    Crossref OpenAlex OpenCitations
  31. Eric Emerson , Chris Hatton (2007). Mental health of children and adolescents with intellectual disabilities in Britain . British Journal of Psychiatry, 191(6), 493-499. Royal College of Psychiatrists.
    Type: Article DOI: 10.1192/bjp.bp.107.038729 OpenAlex: https://openalex.org/W2124778889
    Crossref OpenAlex OpenCitations
  32. Chad Bennett (2002). Book Review: Challenging Behaviour: Analysis and Intervention in People with Severe Intellectual Disabilities, 2nd Edition . Australian & New Zealand Journal of Psychiatry, 36(5), 713-714. SAGE Publications.
    Type: Article DOI: 10.1046/j.1440-1614.2002.01083h.x OpenAlex: https://openalex.org/W1993914776
    OpenAlex
  33. Jane Brylewski , Luci Wiggs (1999). Sleep problems and daytime challenging behaviour in a community‐based sample of adults with intellectual disability . Journal of Intellectual Disability Research, 43(6), 504-512. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.1999.00234.x OpenAlex: https://openalex.org/W2004103047
    Crossref OpenAlex OpenCitations
  34. Mona El-Sheikh , Joseph A. Buckhalt , Peggy S. Keller , Douglas A. Granger (2008). Children's objective and subjective sleep disruptions: Links with afternoon cortisol levels. Health Psychology, 27(1), 26-33. American Psychological Association (APA).
    Type: Article DOI: 10.1037/0278-6133.27.1.26 OpenAlex: https://openalex.org/W2035611612
    Crossref OpenAlex OpenCitations
  35. S. Carvill (2001). Sensory impairments, intellectual disability and psychiatry . Journal of Intellectual Disability Research, 45(6), 467-483. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.2001.00366.x OpenAlex: https://openalex.org/W2074646202
    Crossref OpenAlex OpenCitations
  36. Linda A. Reddy , Steven I. Pfeiffer (2007). Behavioral and Emotional Symptoms of Children and Adolescents with Prader-Willi Syndrome . Journal of Autism and Developmental Disorders, 37(5), 830-839. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/s10803-006-0210-2 OpenAlex: https://openalex.org/W2010297635
    Crossref OpenAlex OpenCitations
  37. S. CLIFT , M. DAHLITZ , J. D. PARKES (1994). Sleep apnoea in the Prader‐Willi syndrome . Journal of Sleep Research, 3(2), 121-126. Wiley.
    Type: Article DOI: 10.1111/j.1365-2869.1994.tb00115.x OpenAlex: https://openalex.org/W2016586520
    Crossref OpenAlex OpenCitations
  38. Jacob Cohen (1992). A power primer. Psychological Bulletin, 112(1), 155-159. American Psychological Association (APA).
    Type: Article DOI: 10.1037/0033-2909.112.1.155 OpenAlex: https://openalex.org/W2037557484
    Crossref OpenAlex OpenCitations
  39. Blythe A. Corbett , Sally Mendoza , Maryam Abdullah , Jacob A. Wegelin , Seymour Levine (2006). Cortisol circadian rhythms and response to stress in children with autism . Psychoneuroendocrinology, 31(1), 59-68. Elsevier BV.
    Type: Article DOI: 10.1016/j.psyneuen.2005.05.011 OpenAlex: https://openalex.org/W2124859267
    Crossref OpenAlex OpenCitations
  40. L. Wiggs , G. Stores (1996). Severe sleep disturbance and daytime challenging behaviour in children with severe learning disabilities . Journal of Intellectual Disability Research, 40(6), 518-528. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.1996.tb00662.x OpenAlex: https://openalex.org/W4251267925
    Crossref OpenCitations
  41. Peter Muris , Pim Steerneman , Harald Merckelbach , Irit Holdrinet , Cor Meesters (1998). Comorbid Anxiety Symptoms in Children with Pervasive Developmental Disorders . Journal of Anxiety Disorders, 12(4), 387-393. Elsevier BV.
    Type: Article DOI: 10.1016/s0887-6185(98)00022-x OpenAlex: https://openalex.org/W2027846886
    Crossref OpenAlex OpenCitations
  42. P. Gail Williams , Lonnie L. Sears , AnnaMary Allard (2004). Sleep problems in children with autism . Journal of Sleep Research, 13(3), 265-268. Wiley.
    Type: Article DOI: 10.1111/j.1365-2869.2004.00405.x OpenAlex: https://openalex.org/W2019711303
    Crossref OpenAlex OpenCitations
  43. Stephanie L. Greenham (1999). Learning Disabilities and Psychosocial Adjustment: A Critical Review . Child Neuropsychology, 5(3), 171-196. Informa UK Limited.
    Type: Article DOI: 10.1076/chin.5.3.171.7335 OpenAlex: https://openalex.org/W2032963649
    Crossref OpenAlex OpenCitations
  44. Kate Sofronoff , Tony Attwood , Sharon Hinton (2005). A randomised controlled trial of a CBT intervention for anxiety in children with Asperger syndrome . Journal of Child Psychology and Psychiatry, 46(11), 1152-1160. Wiley.
    Type: Article DOI: 10.1111/j.1469-7610.2005.00411.x OpenAlex: https://openalex.org/W2028122504
    Crossref OpenAlex OpenCitations
  45. E. Emerson , J. Bromley (1995). The form and function of challenging behaviours . Journal of Intellectual Disability Research, 39(5), 388-398. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.1995.tb00543.x OpenAlex: https://openalex.org/W2024405530
    Crossref OpenAlex OpenCitations
  46. R. Didden , H. Korzilius , B. van Aperlo , C. van Overloop , M. de Vries (2002). Sleep problems and daytime problem behaviours in children with intellectual disability . Journal of Intellectual Disability Research, 46(7), 537-547. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.2002.00404.x OpenAlex: https://openalex.org/W2141617715
    Crossref OpenAlex OpenCitations
  47. Silvia Miano , Oliviero Bruni , Maurizio Elia , Lidia Scifo , Arianna Smerieri , Alessia Trovato et al. (2008). Sleep phenotypes of intellectual disability: A polysomnographic evaluation in subjects with Down syndrome and Fragile-X syndrome . Clinical Neurophysiology, 119(6), 1242-1247. Elsevier BV.
    Type: Article DOI: 10.1016/j.clinph.2008.03.004 OpenAlex: https://openalex.org/W2035175869
    Crossref OpenAlex OpenCitations
  48. L. Hulbert‐Williams , Richard P. Hastings (2008). Life events as a risk factor for psychological problems in individuals with intellectual disabilities: a critical review . Journal of Intellectual Disability Research, 52(11), 883-895. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2008.01110.x OpenAlex: https://openalex.org/W2026993648
    Crossref OpenAlex OpenCitations
  49. Elisabeth M. Dykens (2000). Annotation: Psychopathology in Children with Intellectual Disability . Journal of Child Psychology and Psychiatry, 41(4), 407-417. Wiley.
    Type: Article DOI: 10.1111/1469-7610.00626 OpenAlex: https://openalex.org/W2159808430
    Crossref OpenAlex OpenCitations
  50. S. L. Einfeld , Bruce J. Tonge (1996). Population prevalence of psychopathology in children and adolescents with intellectual disability: I rationale and methods . Journal of Intellectual Disability Research, 40(2), 91-98. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.1996.tb00610.x OpenAlex: https://openalex.org/W4252559595
    Crossref OpenCitations
  51. LUCI WIGGS , GREGORY STORES (1998). Behavioural treatment for sleep problems in children with severe learning disabilities and challenging daytime behaviour: Effect on sleep patterns of mother and child . Journal of Sleep Research, 7(2), 119-126. Wiley.
    Type: Article DOI: 10.1046/j.1365-2869.1998.00107.x OpenAlex: https://openalex.org/W2031015786
    OpenAlex
  52. S. L. Einfeld , Bruce J. Tonge (1996). Population prevalence of psychopathology in children and adolescents with intellectual disability: II epidemiological findings . Journal of Intellectual Disability Research, 40(2), 99-109. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.1996.tb00611.x OpenAlex: https://openalex.org/W4234545465
    Crossref OpenCitations
  53. Emerson (1998). Working with people with challenging behaviour .
    Type: Other
    Crossref
  54. Eric Emerson (2001). Challenging Behaviour: Analysis and Intervention in People with Severe Intellectual Disabilities .
    Type: Book OpenAlex: https://openalex.org/W2616179494
    Crossref OpenAlex
  55. Gahan Fallone , Christine Acebo , Ronald Seifer , Mary A. Carskadon (2005). Experimental Restriction of Sleep Opportunity in Children: Effects on Teacher Ratings . Sleep, 28(12), 1561-1567. Oxford University Press (OUP).
    Type: Article DOI: 10.1093/sleep/28.12.1561 OpenAlex: https://openalex.org/W2104772434
    Crossref OpenAlex OpenCitations
  56. K. Lowe , D. Allen , Emily J.H. Jones , S. Brophy , K. Moore , W. James (2007). Challenging behaviours: prevalence and topographies . Journal of Intellectual Disability Research, 51(8), 625-636. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2006.00948.x OpenAlex: https://openalex.org/W2042578701
    Crossref OpenAlex OpenCitations
  57. Eric Emerson , Chris Kiernan , Alison Alborz , David Reeves , Heidi Mason , Rebecca Swarbrick et al. (2001). The prevalence of challenging behaviors: a total population study . Research in Developmental Disabilities, 22(1), 77-93. Elsevier BV.
    Type: Article DOI: 10.1016/s0891-4222(00)00061-5 OpenAlex: https://openalex.org/W2130150291
    Crossref OpenAlex OpenCitations
  58. PAULA KRAKOWIAK , BETH GOODLIN‐JONES , IRVA HERTZ‐PICCIOTTO , Lisa A. Croen , ROBIN L. HANSEN (2008). Sleep problems in children with autism spectrum disorders, developmental delays, and typical development: a population‐based study . Journal of Sleep Research, 17(2), 197-206. Wiley.
    Type: Article DOI: 10.1111/j.1365-2869.2008.00650.x OpenAlex: https://openalex.org/W2097453934
    Crossref OpenAlex OpenCitations
  59. Elaine C. Marshburn , Michael G. Aman (1992). Factor validity and norms for the Aberrant Behavior Checklist in a community sample of children with mental retardation . Journal of Autism and Developmental Disorders, 22(3), 357-373. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/bf01048240 OpenAlex: https://openalex.org/W2043524795
    Crossref OpenAlex OpenCitations
  60. Glynis Murphy , Julie Beadle-Brown , Lorna Wing , Judy Gould , Amitta Shah , Nan Holmes (2005). Chronicity of Challenging Behaviours in People with Severe Intellectual Disabilities and/or Autism: A Total Population Sample . Journal of Autism and Developmental Disorders, 35(4), 405-418. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/s10803-005-5030-2 OpenAlex: https://openalex.org/W2044188045
    Crossref OpenAlex OpenCitations
  61. Flavia Giannotti , Flavia Cortesi , Antonella Cerquiglini , Daniela Miraglia , Cristina Vagnoni , Teresa Sebastiani et al. (2008). An Investigation of Sleep Characteristics, EEG Abnormalities and Epilepsy in Developmentally Regressed and Non-regressed Children with Autism . Journal of Autism and Developmental Disorders, 38(10), 1888-1897. Springer Science and Business Media LLC.
    Type: Article DOI: 10.1007/s10803-008-0584-4 OpenAlex: https://openalex.org/W2068378504
    Crossref OpenAlex OpenCitations
  62. C. P. Hemmings , S. Gravestock , M. Pickard , N. Bouras (2006). Psychiatric symptoms and problem behaviours in people with intellectual disabilities . Journal of Intellectual Disability Research, 50(4), 269-276. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2006.00827.x OpenAlex: https://openalex.org/W2054588000
    Crossref OpenAlex OpenCitations
  63. David Gozal (1998). Sleep-Disordered Breathing and School Performance in Children . Pediatrics, 102(3), 616-620. American Academy of Pediatrics (AAP).
    Type: Article DOI: 10.1542/peds.102.3.616 OpenAlex: https://openalex.org/W2091087005
    Crossref OpenAlex OpenCitations
  64. Amanda L. Richdale (1999). Sleep problems in autism: prevalence, cause, and intervention . Developmental Medicine & Child Neurology, 41(1), 60-66. Wiley.
    Type: Article DOI: 10.1017/s0012162299000122 OpenAlex: https://openalex.org/W2063104467
    Crossref OpenAlex OpenCitations
  65. M. A. Polimeni , Amanda L. Richdale , A. J. P. Francis (2005). A survey of sleep problems in autism, Asperger's disorder and typically developing children . Journal of Intellectual Disability Research, 49(4), 260-268. Wiley.
    Type: Article DOI: 10.1111/j.1365-2788.2005.00642.x OpenAlex: https://openalex.org/W2073321759
    Crossref OpenAlex OpenCitations
  66. L. Wiggs , G. Stores (1996). Severe sleep disturbance and daytime challenging behaviour in children with severe learning disabilities . Journal of Intellectual Disability Research, 40(6), 518-528. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.1996.799799.x OpenAlex: https://openalex.org/W2070196942
    OpenAlex OpenCitations
  67. Maaike H Nauta , Agnes Scholing , Ronald M Rapee , Maree Abbott , Susan H Spence , Allison Waters (2004). A parent-report measure of children’s anxiety: psychometric properties and comparison with child-report in a clinic and normal sample . Behaviour Research and Therapy, 42(7), 813-839. Elsevier BV.
    Type: Article DOI: 10.1016/s0005-7967(03)00200-6 OpenAlex: https://openalex.org/W2120374659
    Crossref OpenAlex
  68. S. L. Einfeld , Bruce J. Tonge (1996). Population prevalence of psychopathology in children and adolescents with intellectual disability: II epidemiological findings . Journal of Intellectual Disability Research, 40(2), 99-109. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.1996.768768.x OpenAlex: https://openalex.org/W2112482258
    OpenAlex OpenCitations
  69. S. L. Einfeld , Bruce J. Tonge (1996). Population prevalence of psychopathology in children and adolescents with intellectual disability: I rationale and methods . Journal of Intellectual Disability Research, 40(2), 91-98. Wiley.
    Type: Article DOI: 10.1046/j.1365-2788.1996.767767.x OpenAlex: https://openalex.org/W1970410684
    OpenAlex OpenCitations
  70. Scottish Executive (2006). Changing childhoods report .
    Type: Other
    Crossref
  71. Scottish Intercollegiate Guidelines Network (SIGN) (2007). Assessment, diagnosis and clinical intervention for children and young people with autism spectrum disorders. A National Clinical Guideline. Guideline 98 .
    Type: Other
    Crossref
  72. Luci Wiggs , Gregory Stores (1999). Behavioural Treatment for Sleep Problems in Children with Severe Learning Disabilities and Challenging Daytime Behaviour: Effect on Daytime Behaviour . Journal of Child Psychology and Psychiatry, 40(4), 627-635. Wiley.
    Type: Article DOI: 10.1111/1469-7610.00479 OpenAlex: https://openalex.org/W2164261709
    Crossref OpenAlex OpenCitations
  73. Stores (2001). Normal sleeping including developmental aspects .
    Type: Other
    Crossref
  74. Stores (2001). Sleep problems and sleep disorders: General .
    Type: Other
    Crossref
  75. Tabachnick (2007). Using multivariate statistics .
    Type: Other
    Crossref
  76. Jacob Cohen (1992). QUANTITATIVE METHODS IN PSYCHOLOGY A Power Primer .
    Type: Article OpenAlex: https://openalex.org/W2292879840
    OpenAlex
  77. Zarowski (2006). Behavioral disturbances and anxiety in children and adolescents with sleep disorders . European Sleep Research Society, 15, 120.
    Type: Other
    Crossref