A design evaluation tool for older adults using domestic information processing appliances

Area of Science:

• Human-Computer Interaction
• Gerontology
• Usability Engineering

Background:

• Domestic appliances increasingly use digital technology, posing challenges for older adults.
• Poorly designed interfaces hinder independence and daily living activities for the elderly.

Purpose of the Study:

• To introduce a coding scheme for analyzing user interactions with domestic information processing appliances.
• To inform design recommendations for operational interfaces and instructional materials tailored to older adults.

Main Methods:

• Development of a coding scheme analyzing four aspects of user interaction.
• Application of the scheme in a case study involving a microwave oven.
• Evaluation of user information processing, interface interaction, verbalization, and workflow impediments.

Main Results:

• The coding scheme effectively analyzes user interactions with domestic appliances.
• Identified specific challenges older adults face with appliance interfaces and instructions.
• Provided a framework for evaluating design efficacy.

Conclusions:

• The developed coding scheme is a valuable tool for evaluating appliance design for older adults.
• Design improvements can enhance usability and support independent living for this demographic.
• Further research can refine the scheme for broader application.