Researchers first put participants in a good or bad mood by having them take a test on facial emotion recognition. (sciencedaily.com)
Factors such as eye contact with the parent, responsiveness, warmth, speech, positive body language, repetitive behaviours, and recognition of facial emotions were observed. (sciencedaily.com)
How do you develop a character when you only have voice and no direct control over facial emotions? (mcvuk.com)