This document provides a summary of the history and development of personality and career assessment tools, with a focus on the company Professional DynaMetric Programs (PDP). It describes key events and individuals in the field dating back to 400 BC, and then outlines the founding of PDP in 1962, the development of its tools and software over the decades, expansion globally by the 2000s, and continued innovations in recent years including new language options and online platforms.