ABSTRACT
To make sure innovative touchscreen techniques can benefit well the elderly population, this study utilized ballistic movement models to evaluate the differences of movement speed and accuracy between elder and young adults while interacting with a touchscreen. Six elder and six young participants conducted ballistic movements on a touchscreen monitor. The measured data of movement time and endpoint error were utilized to test the ballistic movement models. Our results showed that ballistic movement models fitted well young participants’ data. However, elder participants performed movements with a conservative manner; their movement time and variable errors did not increase with increased movement distance as much as that of young participants’. Future research will focus on enhancing experimental designs to obtain solid conclusions so that the results could help developing touchscreen design guidelines.
