Originally founded in 2003 as the Interaction Design Group (IxDG), the Interaction Design Association (IxDA) was incorporated as a non-profit, member-supported organization in September 2005.

The following principles are fundamental to the design and implementation of effective interfaces, whether for traditional GUI environments or the web.

This website features the beginnings of a free, open-content, peer-reviewed Encyclopedia covering terms from the disciplines of Interaction Design, Human-Computer Interaction (HCI), Design, Human Factors, Usability, Information Architecture, and related f