Development of sensorimotor organization in young children / Pierre Mounoud and Claude-Alain Hauert
From prerepresentational to representational cognition / Jonas Langer
Transitions in early representational intelligence / Susan Sugarman
A search for the origins of equivalence concepts through a microanalysis of block play / George Forman
A longitudinal analysis of early number concepts / Sheldon H. Wagner and Joseph Walters
The development of hierarchic organization / Barbara Dillon Goodson
Structural developmesnt in a symbolic medium / Stuart Reifel and Patricia Marks Greenfield
From rhythm to reversibility / Gilberte Pieraut-Le Bonniec
Physical knowledge and social interaction in children from 18 to 24 months of age / Mina Verba, Mira Stambak, and Hermina Sinclair ; in collaboration with Sylvie Rayna and Laura Bonica
Understanding others / Dennie Wolf
Epilogue / George Forman.
