1. Visual thinking.;Arnheim,1969
2. A study of the strategies used by kindergarten and third-grade children in a letter-like discrimination task.;Back,1972
3. Eye movements and horizontal decalage: Some preliminary findings;Boersma;Perceptual and Motor Skills,1970
4. Eye movements and conservation acceleration;Boersma;Journal of Experimental Child Psychology,1974
5. A new slant on orientation perception;Braine;American Psychologist,1978