1. Bayley Scales of Infant Development;Bayley,1969
2. Conflict, arousal, and curiosity;Berlyne,1960
3. Novelty, complexity, and hedonic value;Berlyne;Perception & Psychophysics,1970
4. Mastery motivation and developmental delay;Brockman,1988
5. Note on an attempt to replicate a relation between stimulus unpredictability and infant attention;Collins;Journal of Experimental Child Psychology,1972