Abstract
References
1.
Gibson
J J
, 1979 The Ecological Approach to Visual Perception (Boston , MA: Houghton-Mifflin ).
2.
Piaget
J
Inhelder
B
, 1956 The Child's Conception of Space (London : Routledge and Kegan Paul ).
3.
Thelen
E
Smith
L
, 1994 A Dynamic Systems Approach to the Development of Cognition and Action (Cambridge , MA: MIT Press ).