In the SDAC, different types of disability have been grouped together because they share broad similarities that would require similar types of support. There are five disability groups:
- Sensory and speech
- Head injury, stroke or brain damage.
There are certain well known developmental stages in the life of a very young child and it is possible that problems leading to disability are only noticed when a child’s development varies from the ‘norm’.
Some issues become more obvious in the context of being together with other children of a similar age. The emphasis in schools on cognitive tasks such as reading and writing may also make such discrepancies more evident. For example, intellectual disability was more apparent in 5-12 year olds (5.3%) and 13-17 year olds (4.6%) than it was in infants aged 0-4 years (0.9%) (Graph 3).
Primary school aged children were also more likely than infants to have psychological disability (2.0% compared with 0.4% respectively).