1. An introduction to motivation;Atkinson,1964
2. Self-perception: An alternative interpretation of cognitive dissonance phenomena;Bem;Psychological Review,1967
3. Attitude change as a function of the inducement for espousing a pro-attitudinal communication;Benware;Journal of Experimental Social Psychology,1975
4. Aesthetics and psychobiology;Berlyne,1971
5. The self-perception of intrinsic and extrinsic motivation;Calder;Journal of Personality and Social Psychology,1975