Episode 1: This is the first part of a two-part lecture on diagnosis and assessment. The Bio-psychosocial-spiritual (BPSS) assessment and the DSM diagnosis are the two most common types of assessments made by social workers. In this lecture, I briefly review the history of DSM diagnosis, from the creation of the first ICD in 1900 to the most recent text revision of the DSM-IV in 2000. I discuss the multiaxial system and provide examples. I transition from DSM diagnosis to the BPSS assessment by discussing the similarities and differences between the two assessments.