Age-related differences in pointing movements in restricted visual tasks and their design implication

The operation of the touch screen is a typical pointing movement. Because touch screens has such a wide range of applications, the users of touch screen will necessarily include people of all age groups. The variation in physical and psychomotor capability between different age groups which affect touch screen performance should, therefore, be studied to facilitate the design of touch screen user interface is necessary. The goal of the study was to examine the effect of aging on pointing movements under restricted visual feedback conditions (i.e., full-vision, no feedback about hand movement, no feedback about target location, and no visual feedback of any type). In light of the fact that different age groups exhibit different kinds of movement behaviour patterns, suggestions for the design of touch screen user interface were outlined.