KINAESTHETIC PROCESSES IN THE WHITE RAT 



9 



decreased from an average of eighteen minutes (m.v. 3.5 minutes) 

 on the first trial to an average of three minutes (m.v. 35 seconds) 

 on the last trial. 



During the training the following tendencies and characteris- 

 tics of behavior were manifested: a tendency toward simple 

 alternation; a tendency to run a loop of the maze in the reverse 

 direction as though continued activity of this type might bring 

 the final reward of food; a tendency to alternate after success, 

 as described at the first of the paper; and finally a tendency 

 toward greater variability in the first four choices than in the last 

 six constituting the day's test. Of these the tendency toward 

 simple alternation and the tendency to alternate after success 



TABLE 4 

 Behavior in temporal maze 



have appeared so constantly in all difficult problems with the 

 T-box, that it seems almost safe to affirm that these are innate 

 reaction tendencies of the rat. 



In illustration of the last of the four mentioned behavior ten- 

 dencies, the series of choices made by two typical rats on four 

 successive days at the close of the experimentation can be indi- 

 cated in table 4. W indicates a wrong choice. R indicates a 

 correct choice. In each case the reference is to a choice occur- 

 ring at the point where the right and left paths diverge at the 

 top of the T. An inspection of this table will show that the first 

 four responses are not identical from day to day. The last six 

 responses indicate a position habit of going to the left. Alterna- 



