Table 1: The used Facial Expressions and Body Gestures Classified According to [34] and [35] Respectively

Facial expression	Positive	Interested, Amazed, Happy, Smiling
	Neutral	Neutral, Thinking
Body gestures	Positive	Hands Clenching-front, Hands Clenching-back, Open Palms, Pointing, Chin Stroking, Hands Steepling and Walking
	Negative	Arms Folded and Legs Crossed
	Neutral	Neutral