Facial Action Coding System. The Manual -

Over 500 pages (some digital editions exceed 1,000 pages).

The is the foundational technical guide for the Facial Action Coding System (FACS) , a comprehensive, anatomically based protocol for measuring and describing all visually discernible facial movements. First published in 1978 by Paul Ekman and Wallace V. Friesen, it provides a standard taxonomy that breaks down complex facial expressions into individual components called Action Units (AUs) . Quick Facts Facial Action Coding System. The Manual

Paul Ekman , Wallace V. Friesen , and Joseph C. Hager (for the 2002 revision). Original Publication: 1978; significantly updated in 2002. Over 500 pages (some digital editions exceed 1,000 pages)

To provide an objective, descriptive analysis of facial behavior without making initial emotional inferences. Core Methodology Facial Action Coding System - Paul Ekman Group Wallace V. Friesen