G74 – Provide a cursor showing clearly the selected target. It should be obvious to older adults what can be selected and what cannot.

Standard

Guideline:

Provide a cursor showing clearly the selected target. It should be obvious to older adults what can be selected and what cannot.

Guideline Description:

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.

Example:

exemplo G74This 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

Source:

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

Tags:

Affordance , Design, Elderly, Layout,  Selection, Target Design

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G40 – Natural affordances of screens are needed.

Standard

Guideline:

Natural affordances of screens are needed.

Guideline Description:

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.

Example:

examplo G40
Use of written instructions as affordance in a touch screen.

Illustration adapted from Challenges for Designing the User Experience of  Multi-touch Interfaces

Source:

Challenges for Designing the User Experience of  Multi-touch Interfaces, 2010

Tags:

Affordance, Challenge, Multi-Touch, Screen

G13 – Provide cues for interaction for initial learning and sub-sequent use of the technology.

Standard

Guideline:

Provide cues for interaction for initial learning and  sub-sequent use of the technology.

Guideline Description:

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.

Example:

example_g13

This application uses a written message to help user.

Source:

Exploring the Accessibility and Appeal of Surface Computing for Older Adult Health Care Support,2010

Tags:

Accessibility, Affordance, Elderly, Interaction, Intuitive, Learnability, Multi-touch.