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Table 1 Relation between observed attention levels and observable behaviors

From: Predicting students’ attention in the classroom from Kinect facial and body features

  Attention level (l)
Behavior Low (1) Medium (3) High (5)
Writing, A w (l) 0.0 0.05 0.52
Yawning, A y (l) 0.26 0.06 0.001
Supporting head, A s (l) 0.21 0.61 0.11
Leaning back, A b (l) 0.41 0.16 0.12
  1. The values represent rate of time the behavior was present during the periods with the specific attention level