This is a video about UX Design basics and Mental Models by Jamal Nichols.
A mental model is an explanation of someone's thought process about how something works in the real world. It is a representation of the surrounding world, the relationships between its various parts and a person's intuitive perception about his or her own acts and their consequences. (Source: Wikipedia)
In this video, Jamal Nichols explains Mental Models, a core concept in User Centered Design.
Video length is 2 minutes.