G113 – Minimize the number of steps it takes to reach a given screen.

Standard

Guideline:

Minimize the number of steps it takes to reach a given screen.

Guideline Description:

The steps should be simple and number of steps needed to achieve a given screen should be minimized, fostering a good navigation. An useful way of presentation is through of the use of a hierarchy and grouping of information into meaningful categories, focusing only the most relevant items.

Avoid

Complex, multi-step process.
Procedures inconsistent with established practice.
A deep hierarchy.

Example

example g113Examples of well-designed hierarchy menus.

Illustration adapted from Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project

Source:
Design Principles to Accommodate Older Adults,2012
Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project,2012

Tags: Content, Elderly, Layout,  Memory, Navigation, Screen

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G110 – Error messages should be simple and easy to follow.

Standard

Guideline:

Error messages should be simple and easy to follow.

Guideline Description:

In the presence of an error, the system should describe the occurrence explaining how to recover, without blaming the user by  this situation, once older adults are more prone to blame themselves for errors, because they  have low experience with technology. Their motor skills also influence the occurrence of errors. The language employed in the error messages should be understandable by older adults.

Avoid:

Unclear error messages.
Using of inappropriate language.

Example:

example g110

A good example of an error message.

Source:

Designing touch-based interfaces for the elderly,2010
Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project,2012

Tags:

Elderly, Errors, Feedback, Motor, Navigation

G102 – Do not have a deep hierarchy and group information into meaningful categories

Standard

Guideline:

Do not have a deep hierarchy and group information into meaningful categories.

Guideline Description:

The use of a deep hierarchy to show information in the interface is not recommended for older adults, however  the use of a hierarchy with essential elements can be considered. The information should be grouped using meaningful categories giving obvious navigation cues.

Example:

example g102

An example of an user interface using meaningful categories giving obvious navigation cues.

Source:

Designing touch-based interfaces for the elderly,2010

Tags:

Content, Elderly, Layout, Memory,Navigation

G101 – Extra and bolder navigation cues should be provided.

Standard

Guideline:

Extra and bolder navigation cues should be provided.

Guideline Description:

The existence of extra and bolder navigation cues facilitates the use of the interface by older users.

Example:

example g101The identification of option selected in the menu provides a bolder cue of interaction.

Source:

Designing touch-based interfaces for the elderly,2010

Tags:

Elderly, Interaction, Multi-Touch, Navigation.

G100 – Avoid repetitive actions

Standard

Guideline:

Avoid repetitive actions

Guideline Description:

The older adults may suffer of physical impairments causing a diminished of motor capabilities in particular stiffening of the joints and arthritis, reducing the ability to cope with fast repetitive movements. Due to this factor repetitive actions should be avoid.

Example:

example _ g100The movement of the objects A, B, C from container 1 to container 2 is an example of a repetitive task.

Source:

Designing touch-based interfaces for the elderly,2010

Tags:

Design,Elderly, Interaction, Motor, Navigation

G87 – Make it easy for user to correct input errors.

Standard

Guideline:

Make it easy for user to correct input errors.

Guideline Description:

Input errors should be corrected easily. It is important that error message describes  the source of the error and explaining how to recover, using a language understandable by older users.

Example:

exemplo G87An example of an application with an easy correction of input errors.

Source:
Healthcare TV Based User Interfaces for Older Adults, 2010
Design Recommendations for TV User Interfaces for Older Adults: Findings from the eCAALYX Project,2012

Tags:

Elderly, Errors.

G86 – Design error messages that make it clear that the user is not the cause of the error.

Standard

Guideline:

Design error messages that make it clear that the user is not the cause of the error.

Guideline Description:

Older adults have low experience with technology, being usual the user adults blaming themselves by errors. For this reason, error messages should be clear that the user is not the cause of the error.

Example:

exemplo G86

An example of an error message which illustrates that user is not the cause of the error.

Source:

Healthcare TV Based User Interfaces for Older Adults, 2010

Tags:

Elderly, Errors.