Designing something right requires that you completely understand what a person wants to get done. You need to understand how a person uses something if you’re going to get the design right for them. You also need to know the person’s goals and the procedures she/he follows to accomplish those goals.
Mental models give you a deep understanding of people’s motivations and thought processes along with the emotional and philosophical landscape in which they are operating.
Mental models guide the design of your solution and help you and your team make good user and business decisions by focusing your solution on what users actually need – based on the feedback they have already given you.
They can also act as a road map, ensuring continuity of vision and opportunity. A mental model consists of several sections, with groups within each section.
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