The Early Development Instrument/Multiple Challenge Index/The EDI in Ottawa

If a child scores lowiii on nine or more of the 16 sub-domains then s/he is
considered to have multiple challenges because a low score on nine sub-domains
would indicate the child is experiencing challenges in three of the five domains.

Note: The EDI can be viewed on the Offord Centre website:

http://www.offordcentre.com/readiness/EDI_viewonly.html