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December 14, 2018

DiSC History: From Marston to DiSC

1928 emotions of normal people

1940 early measurement of disc concepts: activity vector analysis

1950 Early measurement of DiSC concepts: the self - discription instrument

1970 first disc assessment: personal profile system (PPS)

1994 28-box personal profile system

2000 research into the cirumplex representation of disc

2007 everything disc sales

2008 everything disc management

2009 everything disc workplace and everything disc comparison report

2010 everything disc 363 for leaders 

2011 everything disc work of leaders

2012 adaptive testing implemented

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