Systematic review of cognitive development across childhood in Down syndrome: implications for treatment interventions
Article first published online: 12 MAR 2012
© 2012 The Authors. Journal of Intellectual Disability Research © 2012 Blackwell Publishing Ltd
Journal of Intellectual Disability Research
Volume 57, Issue 4, pages 306–318, April 2013
How to Cite
Patterson, T., Rapsey, C. M. and Glue, P. (2013), Systematic review of cognitive development across childhood in Down syndrome: implications for treatment interventions. Journal of Intellectual Disability Research, 57: 306–318. doi: 10.1111/j.1365-2788.2012.01536.x
- Issue published online: 19 MAR 2013
- Article first published online: 12 MAR 2012
- Accepted 6 January 2012
- cognitive development;
- Down syndrome;
- intellectual disability;
Background There is conjecture regarding the profile of cognitive development over time in children with Down syndrome (DS). Characterising this profile would be valuable for the planning and assessment of intervention studies.
Method A systematic search of the literature from 1990 to the present was conducted to identify longitudinal data on cognitive trajectories in children with DS.
Results Thirteen studies were identified: six assessed overall cognitive performance and seven assessed specific cognitive domains. Studies assessing IQ reported a decline across time. Studies assessing change in cognitive domains were, for the most part, not interpretable because of large age ranges in samples obscuring age-specific data.
Conclusion The current literature has only begun to describe typical cognitive developmental trajectories in children with DS; additional research is needed to clarify this topic.