A Preliminary Assessment of the Psychometric Properties of a New Communication Aid to Support Assessments of Financial Decision-Making Capacity in People with Aphasia

BACKGROUND: Financial decision-making is complex and requires an in-depth assessment. In the presence of communication disorders, like aphasia, such assessments become challenging and require the use of a dedicated communication aid. No communication aid currently exists to support financial decision-making capacity (DMC) assessments for persons with aphasia (PWA).((1)) We sought to establish the validity, reliability, and feasibility of a newly constructed communication aid desigqned for this purpose. METHODS: A mixed methods study was performed, divided into three phases. Phase one was aimed at capturing current understanding of DMC and communication by community-dwelling seniors, using focus groups. The second phase involved the development of a new communication aid to assist with the assessment of financial DMC for PWA. The third phase aimed to establish the psychometric properties of this new visual communication aid. RESULTS: The new communication aid is a 37-page, paper-based document, with 34 picture-based questions. Due to unforeseen difficulties in participant recruitment for evaluating the communication aid, a preliminary evaluation was performed on the results from eight participants. These indicated the communication aid had moderate inter-rater reliability (Gwet’s AC1 kappa of 0.51 [CI 0.4362 to 0.5816, p < .000]), good internal consistency (0.76), and was usable. CONCLUSIONS: This newly developed communication aid is one of a kind, and provides essential support for PWA requiring a financial DMC assessment, which was not previously available. Preliminary evaluation of its psychometric properties is promising; however, further validation is required to confirm its validity and reliability in the proposed sample size.