This article analyzes the concept of expertise. Expertise can have var
ied definitions, and different theories can be used to explain how ind
ividuals become experts. Chunking theory, network theory, and schema t
heory are described as they relate to the development of expertise. In
tuition and expertise are two concepts that are closely related, and t
his association is clear as characteristics of expertise are described
. This article concludes with a presentation of clinical exemplars tha
t serve as model cases to illustrate dimensions of expertise.