# CHI14C09 / CHI15C23: Conceptual Models: Core to Good Design

posted in: CHI14, Conference | 0

A crucial step in designing a user interface for a software application is to design a coherent, task-focused conceptual model (CM). With a CM, designers design better, developers develop better, and users learn and use better. Unfortunately, this step is often skipped, resulting in incoherent, arbitrary, inconsistent, overly-complex applications that impede design, development, learning, understanding, and use. This course covers what CMs are, how they help, how to develop them, and provides hands-on experience.

• Our attention is limited and our memory is imperfect
• Short-term memory (STM, WM)
• Long-term memory (LTM)
• We have two minds
• Old brain + midbrain
• can run many processes in parallel
• fast but approximate, “satisfying”
• des not use working memory
• unconscious, governs most of our behavior
• Cerebral Cortex
• slow but precise
• uses working memory
• one serial processor
• Example: A ball and a bat cost $110, the bat costs$100 more than the ball, how much does the ball cost? 1 wrong, 2 reject