GARS 2 autism rating scale anyone???

[Becaroooo]

Have been sent one to fill in (as has the school SENCO) wrt ds1 and wondered if anyone knew how they score them??

I can only work out the "raw score" which is; 18, 10 and 16.

Can anyone tell me how to work out standard score and therefore his autism index score?

TIA!

Becaroooo

Only just found these reviews of GARS
[[http://aut.sagepub.com/content/14/4/263.abstract Screening Accuracy of Level 2 Autism Spectrum Disorder Rating Scales
A Review of Selected Instruments]]
Does Parent Report of Behavior Differ Across ADOS-G Classifications: Analysis of Scores from the CBCL and GARS
The discriminative ability and diagnostic utility of the ADOS-G, ADI-R, and GARS for children in a clinical setting
Utility of the Gilliam Autism Rating Scale in Research and Clinical Populations
An Evaluation of the Gilliam Autism Rating Scale

I hope this helps

Thanks DF