Unless you have been living under a rock, you have probably heard of the biopsychosocial model as a new paradigm for understanding disease, pathology and rehabilitation. George Engel coined this term in 1977, but it has gained more traction in recent decades. Like most new concepts, it blends old ideas with new information and rebrands it under new name. As you can see by the name, there are three aspects to this assessment/treatment model- the biological, the psychological, and the social aspect.