1. Motor preparation;Brunia,2000
2. Time in the mind: Using space to think about time;Casasanto;Cognition,2008
3. Supporting the use of external representations in problem solving: The need for flexible learning environments;Cox;Journal of Artificial Intelligence in Education,1995
4. The mental representation of parity and number magnitude;Dehaene;Journal of Experimental Psychology: General,1993
5. Use of partial information in responding;De Jong;Journal of Experimental Psychology: Human Perception and Performance,1988