MOVEMENT DIFFERENCES BETWEEN DELIBERATE AND SPONTANEOUS FACIAL EXPRESSIONS: ZYGOMATICUS MAJOR ACTION IN SMILING

Journal of Nonverbal Behavior (2006) - Comment
pubmed: 19367343 doi: 10.1007/s10919-005-0003-x issn: 0191-5886 issn: 1573-3653

Karen L. Schmidt, Zara Ambadar, Jeffrey F. Cohn, L. Ian Reed