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2. Bakan. P. (Fd.) Attention. Princeton. N. J.: Van Nostrand, 1966
3. Social learning and personality development.;Bandura,1963
4. The influence of the albedo and complexity of stimuli on visual fixation in the human infant.;Berlyne;British Journal of Psychology,1958
5. Conflict, arousal and curiosity.;Berlyne,1960