Robert P. Liberman References Robert P. Liberman American psychologist Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: behaviour therapypsychologist Robert P. Liberman introduced assertion or personal effectiveness training as a fundamental component of the clinical services offered by community health centres. Read Morepsychologist Robert P. Liberman introduced assertion or personal effectiveness training as a fundamental component of the clinical services offered by community health centres. Read More