<Li> Nonverbal messages: Cracking the Code ISBN 978 - 0 - 9915636 - 3 - 0 </Li> <Li> Emotional Awareness: Overcoming the Obstacles to Psychological Balance and Compassion (Times Books, 2008) ISBN 0 - 8050 - 8712 - 5 </Li> <Li> Unmasking the Face ISBN 1 - 883536 - 36 - 7 </Li> <Li> Emotions Revealed: Recognizing Faces and Feelings to Improve Communication and Emotional Life (Times Books, 2003) ISBN 0 - 8050 - 7516 - X </Li>

What view of intense emotions was supported by 20th century research