2Remedios R, Ritchie K ,Lieberman D.I Used to Like It But Now I Don't: The Effect of the Transfer Test in Northern Ireland on Pupils' Intrinsic Motivation, British Journal of Educational, 2005,75: 435--452.
3Gneezy, Rustichini,."Pay Enough or Don't Pay At All", Quarterly Journal of Economic,CII, P791-810. 2000.
4Deci E,Koestner R,Ryan R.A Meta--ana- lyric Review of Experiments Examining the Effects of Extrinsic Rewards on Intrinsic Motivation.Psychological Bulletin, 1999,125:627--688.
5Eisenberger R,Armeli S.Can Salient Reward Increase Ccreative Performance without Reducing Intrinsic Ccreative Interest? Journal of Personality and Social Psychology, 1997,72:652-663.
