Data from Norway were analyzed to evaluate early behavioral intervention for children with intellectual disabilities. The intervention group (n = 11) received approximately 10 hours per week of behavioral intervention; the eclectic comparison group (n = 14) received treatment as usual. After 1 year, changes in intelligence and adaptive behavior scores were statistically significant in favor of the behavioral intervention group (effect sizes of 1.13 for Intelligence quotient (IQ) change and .95 for change in adaptive behavior composite). Approximately 64% of the children in the behavioral intervention group met objective criteria for reliable change in IQ, whereas 14% in the eclectic comparison group did so. These results suggest that children with intellectual disability may profit from behavioral intervention typically provided for children with autism.
Altman, D.G. ( 1998). Confidence intervals for the number needed to treat. British Medical Journal, 317, 1309-1312.
2.
Bayley, N. ( 1993). Bayley scales of infant development (2nd ed.). San Antonio, TX: Psychological Corporation.
3.
Buckhalt, J.A., Baird, S.M., & Reilly, A.S. ( 2004). Early language intervention for children with developmental disabilities. In J. L. Matson, R. B. Laud, & M. L. Matson (Eds.), Behavior modification for persons with developmental disabilities: Treatments and supports (Vol. 2). New York: NADD.
4.
Carter, E.W., & Hughes, C. ( 2007). Social interaction interventions: Promoting socially supportive environments and teaching new skills. New York : Guilford.
5.
Cohen, J. ( 1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale, NJ: Lawrence Erlbaum.
6.
Eikeseth, S. ( 2009). Outcome of comprehensive psycho-educational interventions for young children with autism. Research in Developmental Disabilities, 30, 158-178.
7.
Eikeseth, S., Smith, T., Jahr, E., & Eldevik, S. ( 2002). Intensive behavioral treatment at school for 4- to 7-year-old children with autism: A 1-year comparison controlled study. Behavior Modification, 26, 49-68.
8.
Eikeseth, S., Smith, T., Jahr, E., & Eldevik, S. ( 2007). Outcome for children with autism who began intensive behavioral treatment between ages 4 and 7: A comparison controlled study. Behavior Modification, 31, 264-278.
9.
Eldevik, S., Eikeseth, S., Jahr, E., & Smith, T. ( 2006). Effects of low-intensity behavioral treatment for children with autism and mental retardation. Journal of Autism & Developmental Disorders, 36, 211-224.
10.
Eldevik, S., Hastings, R.P., Hughes, J.C., Jahr, E., Eikeseth, S., & Cross, S. ( 2009). Meta-analysis of early intensive behavioral intervention for children with autism. Journal of Clinical Child and Adolescent Psychology, 38, 439-450.
11.
Fey, M.E., Warren, S.F., Brady, N., Finestack, L.H., Bredin-Oja, S.L., Fairchild, M., et al. (2006). Early effects of responsivity education/prelinguistic milieu teaching for children with developmental delays and their parents. Journal of Speech, Language, and Hearing Research, 49, 526-547.
12.
Gardner, W.I., & Griffiths, D.M. (2004). Treatment of aggression and related disruptive behaviors in persons with intellectual disabilities and mental health issues. In J. L. Matson , R. B. Laud, & M. L. Matson (Eds.), Behavior modification for persons with developmental disabilities: Treatments and supports (Vol. 1). New York: NADD.
13.
Jacobson, N.S., & Truax, P. ( 1991). Clinical significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting & Clinical Psychology, 59, 12-19.
14.
Kaiser, A.P., & Trent, J.A. ( 2007). Communication intervention for young children with disabilities: Naturalistic approaches to promoting development. New York : Guilford.
15.
Kraemer, H.C., Morgan, G.A., Leech, N.L., Gliner, J.A., Vaske, J.J., & Harmon, R.J. ( 2003). Measures of clinical significance. Journal of the American Academy of Child & Adolescent Psychiatry, 42, 1524-1529.
16.
Lancioni, G.E., O’Reilly, M.F., & Basili, G. ( 2004). Teaching toileting skills to persons with developmental disabilities. In J. L. Matson, R. B. Laud, & M. L. Matson (Eds.), Behavior modification for persons with developmental disabilities: Treatments and supports (Vol. 2). New York: NADD.
17.
Leaf, R., & McEachin, J. ( 1999). A work in progress. New York: DRL Books.
18.
Lovaas, O., Schreibman, L., Koegel, R., & Rehm, R. ( 1971). Selective responding by autistic children to multiple sensory input. Journal of Abnormal Psychology, 77, 211-222.
19.
Lovaas, O.I. ( 1981). Teaching developmentally disabled children: The me book . Baltimore: University Park Press .
20.
Lovaas, O.I. ( 1987). Behavioral treatment and normal educational and intellectual functioning in young autistic children. Journal of Consulting & Clinical Psychology, 55, 3-9.
Maurice, C., Green, G., & Foxx, R.M. ( 2001). Making a difference: Behavioral intervention for autism . Austin, TX: Pro-Ed.
23.
Maurice, C., Green, G. , & Luce, S. C. (Eds.). (1996). Behavioral intervention for young children with autism: A manual for parents and professionals. Austin, TX: Pro-Ed.
24.
Pinson, L., & Gray, G.E. ( 2003). Number needed to treat: An underused measure of treatment effect. Psychiatric Services, 54, 145-146.
25.
Reichow, B., & Wolery, M. ( 2009). Comprehensive synthesis of early intensive behavioral interventions for young children with autism based on the ucla young autism project model. Journal of Autism & Developmental Disorders , 39, 23-41.
26.
Remington, B., Hastings, R.P., Kovshoff, H., Espinosa, F., Jahr, E., Brown, T., et al. (2007). Early intensive behavioral intervention: Outcomes for children with autism and their parents after two years. American Journal on Mental Retardation, 112, 418-438.
27.
Rogers, S.J., & Vismara, L.A. ( 2008). Evidence-based comprehensive treatments for early autism . Journal of Clinical Child and Adolescent Psychology, 37, 8-38.
28.
Smith, T., Donahoe, P.A., & Davis, B.J. ( 2001). The UCLA young autism project. In J. S. Handleman & S. L. Harris (Eds.), Preschool education programs for children with autism (2nd ed.). Austin, Texas : Pro-Ed.
29.
Smith, T., Eikeseth, S., Klevstrand, M., & Lovaas, O.I. ( 1997). Intensive behavioral treatment for preschoolers with severe mental retardation and pervasive developmental disorder. American Journal on Mental Retardation, 102, 238-249.
30.
Smith, T., Klevstrand, M., & Lovaas, O. ( 1995). Behavioral treatment of Rett’s disorder: Ineffectiveness in three cases. American Journal on Mental Retardation, 100, 317-322.
Straus, S.E., Newton, D., & Tomlinson, G. ( 2004). Centre for evidence-based medicine. Retrieved June 1, 2009, from http://cebm.utoronto.ca/practise/ca/statscal/
Wechsler, D. ( 1989). Wechsler preschool and primary scale of intelligence- revised. San Antonio, TX: Psychological Corporation.
36.
World Health Organization (1993). ICD-10, the ICD-10 classification of mental and behavioural disorders: diagnostic criteria for research. Geneva: Author.
37.
Yoder, P.J., & Warren, S.F. ( 2001). Relative treatment effects of two prelinguistic communication interventions on language development in toddlers with developmental delays vary by maternal characteristics. Journal of Speech, Language, and Hearing Research, 44, 224-237.
