Inconsistency is one of the most common points of breakdown and frustration in the interactions and experiences we have. Whether we’re interacting with other people, applications, our bank, our doctor, our government, anyone, we form expectations and understandings of what someone or something will do based on our previous experiences and their past behaviors. When something happens that doesn’t fit with those expectations–that seems out of character–we’re caught off guard. What do we do next? What should we expect now?
Principles act as rules that guide how we think and act. Formed by our motivations, values and beliefs, we use them as “lenses” through which we examine information in order to make decisions on what to do. And because of their persistent influence on our behavior, they influence other’s views and expectations of us. Using these same kinds of constructs throughout the design process we can design interactions and consistent behaviors that set and live up to expectations for our audiences.