Category - cumshot
The facs manual describes the criteria for observing and coding each action unit. The facs manual was first published in 1978 by ekman and friesen, and was most recently revised in 2002. Ekman discovered strong evidence of universality of some facial expressions of emotion as well as why expressions may appear differently across cultures. Facial action coding system (facs) is a system to taxonomize human facial movements by their appearance on the face, based on a system originally developed by a swedish anatomist named carl-herman hjortsjö. Ekman and friesens (1971) study on the universality of facial expressions found that there were no significant differences between westernized adults and unexposed (to western ideals) subjects when it came to determining emotion from a facial expression. Manual and investigators guide, salt lake city, ut research nexus. Viewing the facial expressions in these videotapes convinced ekman and friesen that none of the techniques for measuring facial expression available when these videotapes were gathered, in the early 1970s, would succeed in discriminating between the smiles of actual enjoyment and the smiles of feigned enjoyment masking negative emotions. The facial expressions shown to the observers were drawn from three sources posed emotions, spontaneous expressions, and photographs in which models followed instructions about which muscles to contract. Ekman and friesen (1982) predicted that smiles that express enjoyment would be marked by smoother zygomatic major actions of more consistent duration than the zygomatic major actions of.