Saberi Roy: The Psychology of Empathy Describing empathy and delineating the stages of empathy along with the theoretical and therapeutic implications

Rob Kall: Smile Anatomy: Emotional Self Regulation and Facial Expression Muscle Measurement and Training an overview of the use of smile muscle training, smile biofeedback and a discussion of a number of the facial muscles involved in authentic and inauthentic smiling, plus discussion of smile psychomotor retardation-- people who have a hard time smiling and feeling good feelings