Early Intensive Behavioural Intervention (UCLA YAP Model) and Autism Ranking:

Programmes based on Early Intensive Behavioural Intervention – UCLA YAP Model are amongst the most best evaluated interventions for children with ASD.
There is good evidence that the EIBI - UCLA YAP Model results in important improvements for many children with an IQ above 35.
The EIBI – UCLA YAP Model does not result in significant changes in all areas of children’s functioning or produce similar gains for all children.
Individual response to intervention is variable and outcome is poorest for children of lower levels of intellectual and linguistic ability.
Studies comparing the EIBI – UCLA YAP Model with other autism- specific early provision have produced inconsistent findings. Some indicate that early specialist pre-school provision produces comparative results to the EIBI- UCLA YAP Model.
There is no evidence to support claims that the EIBI –UCLA YAP Model results in cure or recovery from autism.

Research is needed to evaluate the longer term effects of EIBI - most studies involve only relatively short follow-up periods.
There is a need for more comparative studies of EIBI vs. other high quality, autism specific pre-school programmes.
Although some randomised control trials have been conducted these are small in number and the quality of the alternative intervention has not necessarily been of a high standard.
Any new research will need more focus on fidelity (of both the EIBI and the comparison interventions). There is also a need to explore in much greater detail moderators and mediators of treatment effectiveness.
In particular, the characteristics of the children who do, and do not respond to intervention require systematic investigation.

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