Expectancy Theory
Kocher, Gerhard 
Anyone who has never tried it knows this All
theory is gray, and its heralds are flecked with grey The higher the life
expectancy, the less one can expect from life One notices again and again that the physicians are not dealing with people, but with patients Medical school: They learned
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Organizational Behavior (K) 
Organizational Behavior Several theories form the foundation of organizational behavior, including:
Theory Key Contributors Overview Maslow's Hierarchy of Needs Abraham Maslow
...Expectancy Theory Victor Vroom A theory that suggests motivation is based on the expectation that effort will lead to desired performance
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Nebenberuflich selbstständig 
Nebenberuflich selbständig ist, wer sich neben seinem Hauptjob im Anstellungsverhältnis eine selbständige Nebentigkeit begründet.