Editing Affective computing (section)

====Emotion classification====
{{Main|Emotion classification}}
By doing cross-cultural research in Papua, New Guinea, on the Fore Tribesmen, at the end of the 1960s, [[Paul Ekman]] proposed the idea that facial expressions of emotion are not culturally determined, but universal. Thus, he suggested that they are biological in origin and can, therefore, be safely and correctly categorized.<ref name="Ekman, P. 1969"/>
He therefore officially put forth six basic emotions, in 1972:<ref>{{cite conference | last = Ekman | first =  Paul | author-link = Paul Ekman | year = 1972 | title = Universals and Cultural Differences in Facial Expression of Emotion | editor-first = J. | editor-last = Cole | conference = Nebraska Symposium on Motivation | location = Lincoln, Nebraska | publisher = University of Nebraska Press | pages = 207–283 }}</ref>

* [[Anger]]
* [[Disgust]]
* [[Fear]]
* [[Happiness]]
* [[Sadness]]
* [[Surprise (emotion)|Surprise]]

However, in the 1990s Ekman expanded his list of basic emotions, including a range of positive and [[negative emotion]]s not all of which are encoded in facial muscles.<ref>{{Cite book|last=Ekman |first=Paul |author-link=Paul Ekman |year=1999 |url=http://www.paulekman.com/wp-content/uploads/2009/02/Basic-Emotions.pdf |contribution=Basic Emotions |editor1-first=T |editor1-last=Dalgleish |editor2-first=M |editor2-last=Power |title=Handbook of Cognition and Emotion |place=Sussex, UK |publisher=John Wiley & Sons |url-status=dead |archive-url=https://web.archive.org/web/20101228085345/http://www.paulekman.com/wp-content/uploads/2009/02/Basic-Emotions.pdf |archive-date=2010-12-28 }}.</ref> The newly included emotions are:
# [[Amusement]]
# [[Contempt]]
# [[Contentment]]
# [[Embarrassment]]
# [[Anticipation (emotion)|Excitement]]
# [[Guilt (emotion)|Guilt]]
# [[Pride| Pride in achievement]]
# [[Relief (emotion)|Relief]]
# [[Contentment|Satisfaction]]
# [[Pleasure|Sensory pleasure]]
# [[Shame]]