II. Redintegration 

 (1) Dominant " Error " 



Records 1 and 2, showing " errors " in daily trials of 

 two individual rats, have been cited in full to illustrate 

 not only the dominant " error " but also the method of 

 obtaining the total " errors " in the tables to be given. 



Table I-A presents the total " errors " in both learning 

 and redintegration for the 3 trials per day rats of the 

 group at 70^day retention. Rats 1, 2, and 3 comprise one 

 complete litter; rats 4, 5, and 6 are from a litter of 7, the 

 four remaining being in the 45-day group. Rat 6 is the 

 one cited previously in record 2. The figures running 

 horizontally across the page and preceded by " L." and 

 " R " are the total " errors " in learning and redintegration, 

 respectively. The figures in perpendicular columns under 

 " P." and " M." are totals of plus and minus " errors," 

 respectively. All the " error " tables to follow are con- 

 structed in this manner. 



It has been observed in the consideration of records 

 1 and 2 that of the two " errors," plus and minus, one is 

 an established dominant " error " in almost every case. 

 Thus, beginning at the very start of the maze and con- 

 sidering the learning totals, individually or collectively, 

 the dominant " error " runs in the order plus, minus, plus, 

 minus, etc., omitting alleys 5 and 6 for the present. E. g., 

 in the " errors " of rat 2, plus 85 is dominant over minus 18, 

 minus 83 over plus 12, plus S3 over minus 20, etc. The 

 qualitative totals present a similar situation. 



Coming to a consideration of the redintegration " errors," 

 it may be seen that the dominant " errors " at the turns, 

 with a few unimportant exceptions, follow those dominant 

 in learning. This is notable. There are not as many 

 " errors " in redintegration as in learning, and thus the 

 plus, minus, plus, minus order is so decided; but that it is 

 there is beyond question. Therefore, at the locus or place 



16 



