| Augmentative and alternative communication (AAC) systems may impose increased cognitive demands on adults with aphasia resulting in poor communication outcomes. In addition, the interface displays differentially impact the cognitive and linguistic systems of persons with aphasia. Therefore, the primary purpose of this investigation was to determine how interface displays (grid and scene) impacted navigation accuracy and efficiency (response latency) and discourse outcomes (e.g., syntactic complexity) from a story retell. The secondary purpose was to predict the optimal interface display from various standardized and non-standardized cognitive assessments. A within-subjects design was used for the study. As a pilot project, only eight neurotypical adults completed a series of standardized and nonstandardized cognitive assessments followed by navigation and story retell task in both the grid and scene interface display conditions. Paired samples t-tests revealed that navigation accuracy was significantly higher in the scene display condition. Similarly, response latency was significantly shorter in the scene display condition. There were no differences on any discourse outcome measure between the two conditions. Finally, linear regression analyses indicated that various cognitive-linguistic- scores may predict an optimal interface display. Clinical implications of these findings will be discussed. Keywords: AAC; Aphasia; Cognition; Interface Display; Operational Competence |