00574nam a2200145Ia 4500 8098 20261006004055.0 120911s9999 xx 000 0 und d 0618001816 Kohn, Alfie. 8938 Punished by rewards : the trouble with gold stars, incentive plans, A?s, praise, and other bribes / Alfie Kohn ; with a new afterword by the author. Boston : Houghton Mifflin Co., 1993. Boston : Houghton Mifflin Co., 1993. xiv, 431 p. ; 23 cm. Reward (Psychology), Motivation (Psychology) 8939 8098 8098 0 0 0 0 NU NU 2012-09-11 0 9445 2012-09-11 00:00:00 2012-09-11 OS