Psychological reviews russell et al 2003 and izard 2009

Flow is the mental state of operation in which a person in an activity is fully immersed in a feeling of energized focus, full involvement, and success in the process

Finding Psychological Measures and Manipulations. most recent update: July 2010 The first place to start when looking for a way to measure a particular construct is

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Finding Psychological Measures and Manipulations
Finding Psychological Measures and Manipulations. most recent update: July 2010 The first place to start when looking for a way to measure a particular construct is
Source URL : http://www.muhlenberg.edu/depts/psychology/Measures.html

Flow (psychology) - Wikipedia, the free encyclopedia
Flow is the mental state of operation in which a person in an activity is fully immersed in a feeling of energized focus, full involvement, and success in the process
Source URL : http://en.wikipedia.org/wiki/Flow_(psychology)

Game Theory (Stanford Encyclopedia of Philosophy)
Game theory is the study of the ways in which strategic interactions among economic agents produce outcomes with respect to the preferences (or utilities) of those
Source URL : http://plato.stanford.edu/entries/game-theory/