Administering an IGDI assessment involves conducting a 6-minute play session with the child and a familiar adult who is the play partner; play centers around the toys that are standardized for each specific IGDI. The session should take place in a relatively sheltered, but convenient, setting with few distractions present.
Two options for IGDI administration:
- Option 1: Two adults in the role of familiar play partner (usually the assessor) and a live recorder of the child’s communicative behaviors.
- Option 2: One adult in the role of familiar play partner who additionally sets up and videotapes the session for the purpose of later recording the child’s communicative behaviors from the tape.
Using either option, the assessor times the session for exactly 6 minutes. A digital timer capable of recording minutes and seconds is required.
During the play session, the play partner follows the child’s lead and comments on the child’s words and actions in order to encourage the child’s communication. Assessors do not take the lead; rather, they support and encourage the child.