Psychology Library Editions re-issue volumes from the distinguished and extensive backlist of the many imprints associated with Routledge and Psychology Press in the nineteenth and twentieth centurys: Kegan Paul, Trench & Trubner, Routledge & Kegan Paul, Methuen, Allen & Unwin, Lawrence Erlbaum Associates and Routledge and Psychology Press themselves. Focusing on the Behavioural Sciences, Psychology Library Editions offer the individual as well as the institutional purchaser the opportunity to acquire volumes by some of the greatest thinkers and authors of the last 120 years either on a title-by-title basis, or as carefully selected mini-sets, or extensive ‘libraries’ of multiple volumes.