Facial Action Coding System

1. Action Descriptors

2. Action Units

2.1. Happiness

2.1.1. 6+12

2.2. Sadness

2.2.1. 1+4+15

2.3. Surprise

2.3.1. 1+2+5B+26

2.4. Fear

2.4.1. 1+2+4+5+7+20+26

2.5. Anger

2.5.1. 4+5+7+23

2.6. Disgust

2.6.1. 9+15+16

2.7. Contempt

2.7.1. R12A+R14A

3. emotion recognition

4. Intensity Scoring

4.1. A Trace

4.2. B Slight

4.3. C Marked or Pronounced

4.4. D Severe or Extreme

4.5. E Maximum