1. Some data inconsistent with the optimal arousal theory of motivation;Apter;Perceptual and Motor Skills,1976
2. The Experience of Motivation: The Theory of Psychological Reversals;Apter,1982
3. Metaphor as synergy;Apter,1982
4. Aesthetics and Psychobiology;Berlyne,1971
5. The Five-Day Course in Thinking;De Bono,1968