Picture communication symbols and voice symbols: iconicity and preference among healthy older adults in Taiwan

Abstract

Purpose: Unaided (e.g., speech and gestures) and aided (e.g., symbol corpuses) communication modes facilitate older adults’ expression and comprehension. Adults aged 65 years and above constituted 18.27% of Taiwan’s total population in 2023; hence, prioritizing high-quality healthcare for older adults becomes critical. Commercial symbol corpuses, such as Picture Communication Symbols (PCS) and Voice Symbols (VS), play a vital role in aiding older adults with expression and comprehension in Taiwan. Previous studies on iconicity and preference of symbol corpuses have primarily been conducted in Western and South Asian cultural communities. However, these findings may not apply to all Asian communities. Hence, studies investigating these aspects in specific communities are needed. Through quantitative nonexperimental observations, we explored the iconicity of and preference for PCS and VS among 30 healthy older adults in Taiwan. Materials and Methods: A total of 12 practice words and test words each, familiar to the participants and socially and culturally validated, were selected for the developed VS–PCS iconicity and preference measurement. Verbal choices were made to select one line drawing in both measurements. Results & Conclusions: The findings revealed that VS is significantly more transparent and preferred than PCS. Accounting for the iconicity of and preferences for symbol corpuses is pivotal for symbol selection.