Table 2.

Involvement Matrix roles and role definitions: Current research project

Research phase	Application of Involvement Matrix roles
	Youth who use AAC: Involvement role	Description of involvement of youth who use AAC
Phase 1: Needs analysis	Listener: Listens to information	Listened to the information about the research project given by the researcher
Phase 2: Codeveloping health materials	Advisor: Gives advice	Advised on the health education topics
	Advisor: Gives advice	Advised on the symbols to be included on communication boards as well as the actual structure of the symbols. The youth guided the process of adaptation of symbols for cultural validity, bringing in extra elements for consideration
Phase 3: Copresenting information	Decision‐maker: Makes final decisions	Made final decisions on AAC symbols for their communication board
	Partner: Works as an equal partner	Youth and a member of the researchers are copresenters of information at a youth forum discussion panel

Abbreviation: AAC, augmentative and alternative communication.