CONTENTS 



Page 



I. Apparatus and Method when a Single Problem is Learned 2 



Results with the Latch Box 7 



Results with the Circular Maze 15 



IL The Effect of Different Distributions of Practice when Three Problems 



are Learned Abreast 23 



Results Showing Effect of Distribution of Practice 26 



Summary of Experiments on Learning 41 



in. Retention ' 43 



Discussion of Results ' 46 



Some General Remarks on the Integration of Movements 49 



Conclusions 50 



