00729nam a2200229Ia 4500001000700000003000500007005001700012008004100029010001500070020001500085050001700100082001200117100002900129245004700158260007200205300001400277490005100291504002900342650004900371650004700420650003200467243637BIBL20160527184641.0771201s1978    nju      b    00010 eng    a 77025897   a08777812300 aLB3025b.L35  a371.5/310aLauridsen, David,2Local14aThe token economy systemcDavid Lauridsen.0 aEnglewood Cliffs, N.J.bEducational Technology Publicationscc1978.  axi, 88 p. 4aThe Instructional design libraryvv. 192Local  aBibliography : p. 85-87. 0aRewards and punishments in education.2Local 0aPerformance contracts in education.2Local 0aIncentive Psychology2Local