UtU 'i ' = '^' 



Behavior Monographs 



Volume 2, Number 6. 1915 Serial Number 1 1 



Edited by JOHN B. WATSON 



The Johns Hopkins University 



The Effect of Age on Habit Formation 

 in the Albino Rat 



HELEN B. HUBBERT 



Published 



at Cambridge Boston, Mass. 



HENRY HOLT & COMPANY 



34 West 33d Street, New York 



G. E. STECHERT & CO., London, Paris and Leipzig, Foreign Agents 



