Provide a cursor showing clearly the selected target. It should be obvious to older adults what can be selected and what cannot.
Older adults tend to lose attention frequently, so in a user interface it is important identifying which element on the screen is being currently selected. Older adults also presenting a reduced working memory causing difficulty in the tasks that involving reasoning, which include the ability to understanding what the user can and cannot do, and the ability to remembering the steps required to complete a task. Because of this, in a user interface should be obvious what can be selected and what cannot by older adults.
This example uses a yellow highlight to distinguish the selected item in the menu.
Illustration adapted from Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project
Healthcare TV Based User Interfaces for Older Adults, 2010
Designing touch-based interfaces for the elderly,2010
Touch Screens for the Older User,2011
Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project,2012
Affordance , Design, Elderly, Layout, Selection, Target Design
Natural affordances of screens are needed.
Natural affordances of screens representing a challenge in designing of multi-touch interfaces. The physical appearance of screens can be an affordance of interface use. If physical appearances do not give touch affordances, then it is necessary providing visual cues, such as the use of written or symbolic instructions.
Use of written instructions as affordance in a touch screen.
Illustration adapted from Challenges for Designing the User Experience of Multi-touch Interfaces
Challenges for Designing the User Experience of Multi-touch Interfaces, 2010
Affordance, Challenge, Multi-Touch, Screen
Provide cues for interaction for initial learning and sub-sequent use of the technology.
In spite of intuitiveness in the use of multi-touch surfaces, it’s necessary provide some cues to facilitating a initial learning as well as sub-sequent use of the technology by older users, for example through written messages.
This application uses a written message to help user.
Exploring the Accessibility and Appeal of Surface Computing for Older Adult Health Care Support,2010
Accessibility, Affordance, Elderly, Interaction, Intuitive, Learnability, Multi-touch.