User and Task Analysis for Interface Design

JoAnn T. Hackos is president of Comtech Services, a design consulting firm that specializes in assisting companies to understand their users, design their products and information, conduct usability tests, and manage development projects. Janice (Ginny) C. Redish is president of Redish & Associates, Inc. Ginny helps companies with user and task analysis, usability assessments, interface and information design, and building usability into software and documentation processes.