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A practice whereby tokens representing money, toys, candy, etc., are given as secondary reinforcers contingent upon certain desired behaviors or performances
1
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Economisch onderzoek. : Field experiments in economics / edited by Jeffrey P. Carpenter, Glenn W. Harrison, John A. List
2005
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Economische macht. : Empowering the American consumer : corporate responsiveness and market profitability / A. Coskun Samli
2001
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Economische ongelijkheid. : One with Nineveh : politics, consumption, and the human future / Paul R. Ehrlich and Anne H. Ehrlich
2004
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Economische orde. : Zukunftsprobleme der Weltwirtschaftsordnung / von Norbert Berthold [and others] ; herausgegeben von Werner Zohlnhöfer
1996
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Economische planning. : Infrastructure planning / J. Parkin, D. Sharma
1999
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Economische stagnatie. : The Asian miracle, myth, and mirage : the economic slowdown is here to stay / Bernard Arogyaswamy
1998
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Economische statistiek. : Business survey methods / edited by Brenda G. Cox [and others]
1995
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