comments:
Plutchik's theory proposes 8 basic emotion, the six usual plus anticipation and acceptance, that are spread out in the perimeter of a circle (see http://socsci.uwosh.edu/IntroPsych/Ansfield/Sessions/Session_4/sld075.htm and the next 3-4 slides). In this framework, the origin can be thought of as neutral and intermediate positions on this plane can be mapped to relevant intermediate emotions. Preliminary work (pending actual evaluation) in this field, shows that one can use descriptions of the basic emotions and "interpolate" their representations to achieve in-between expressions (e.g. fear + sadness = depression) or "scale" them to get different activation (e.g. worry < fear < terror)

AISB 2009 Symposium on Affective Bodily Expression
