Practical Methodology of Cognitive Tasks Within a Navigational Assessment

Area of Science:

• Augmentative and Alternative Communication (AAC)
• Cognitive Psychology
• Human-Computer Interaction

Background:

• Navigational skills are crucial for symbol selection on dynamic screen speech-generating devices (SGDs).
• Cognitive skills such as sustained attention, categorization, cognitive flexibility, and fluid reasoning influence symbol-finding in SGDs.
• Previous research indicates working memory is not correlated with navigation in SGDs.

Purpose of the Study:

• To describe a step-by-step methodology for assessing navigation accuracy relative to cognitive skills in SGD users.
• To provide a replicable method for researchers and clinicians working with children needing complex communication solutions.

Main Methods:

• Utilizes a computerized tablet with an augmentative and alternative communication (AAC) application.
• Involves a symbol booklet and the Leiter International Performance Scale-Revised (Leiter-R) for cognitive assessment.
• Direct observation facilitates study replication and clinical application.

Main Results:

• The methodology has been successfully applied in studies with typically developing children and children with Autism Spectrum Disorder.
• Identifies key cognitive skills impacting symbol navigation within SGDs.
• Provides a framework for understanding navigation challenges in children using AAC devices.

Conclusions:

• The described method offers a clear, step-by-step approach to measure navigation accuracy in relation to cognitive abilities.
• This assessment aids clinicians in determining children's capacity to navigate SGDs with taxonomical organization.
• Facilitates research replication and enhances understanding of AAC user navigation.