This document provides an overview of immediate constituent analysis in linguistics. It defines immediate constituent analysis as a method that divides sentences into successive layers of constituents until each constituent contains a single word or meaningful part of a word. The document then discusses the history of immediate constituent analysis, noting it was first mentioned by Leonard Bloomfield and further developed by Rulon Wells and Noam Chomsky. It provides some important notes on how to perform constituent analysis and examples analyzing words like "gentlemanly" into their constituents. The document concludes with a short practice test and references.