38 



THOMAS WILLIAM BROCKBANK 



TABLE VI-B 

 1 Trial per Day 

 30-Day Period, During Which A New Problem Was Learned 

 Time in Seconds 



learned a new problem during retention were more nearly 

 perfect in redintegration than of the group which repre- 

 sented the norm. The learning of the rope-ladder problem, 

 in this instance, has not interfered with the retention of 

 the acquired habit, and it would seem that no interference 

 would result from the learning of any similar problem 

 during the retention period. There is a possibility, however, 

 that some problem different in nature from that of the 

 rope ladder, and more difficult in point of the establishment 

 of integrations may be detrimental to the retention of 

 the maze habit. But this can be proven only by further 

 experiment. 



(c) Influence of Incomplete Learning 



The individuals of every group already considered have 

 completed learning and redintegration according to the 

 standard norm of fifteen trials, as already explained. Al- 

 though, according to this norm, any of the last nine trials 



