Writing a second edition is a first for me, and therefore to maintain proximity to the subject matter I recruited the help of my younger brother, whom I thank dearly. This second edition comes after five years and contains many necessary additions, deletions and refinements. However, the text remains succinct and true to its original objectives with an emphasis on aiding memory. During this period the MRCPsych examination has altered considerably and will no doubt evolve further. It is therefore essential that prospective candidates obtain the most recent College guidelines and familiarize themselves with the syllabus. Knowing what you are up against is part of the equation, but.