In the light of these facts it is fair to claim that the effects of the white-black training had not wholly disappeared as the result of eight weeks of rest, and that the experiment therefore fails to furnish satisfactory grounds for the statement that re-learning occurs more rapidly than learning. I accept this criticism as pertinent, although not necessarily valid, and at the same time I freely admit that the results have a significance which I had not anticipated. But they are not less interesting or valuable on that account. Granting, then, that at least some of the ten individuals which took part in the experiment had not completely lost the memory of their white-black training at the end of eight weeks, it is still possible that an examination of the individual results may justify some conclusion concerning the question which was proposed at the outset of the investigation. Such an examination is made possible by Tables 49 and 50, in which I have arranged separately the results for the males and the females.
TABLE 49
WHITE-BLACK TRAINING. TEN TESTS PER DAY
Males
TRAINING RETRAINING
210 220 230 410 420 AV. 210 220 230 410 420 AV.
A 6 5 6 6 6 5.8 5 4 5 4 3 4.2 B 6 8 8 5 1 5.6 8 4 5 4 6 5.4
1 6 7 6 2 4 5.0 3 3 4 7 3 4.0
2 4 3 1 2 3 2.6 2 4 2 5 3 3.2
3 3 1 4 3 4 3.0 1 4 1 4 1 2.2
4 5 0 3 3 2 2.6 0 1 0 1 2 0.8
5 3 0 4 1 4 2.4 0 2 0 2 0 0.8
6 2 1 4 0 1 1.6 0 1 0 0 2 0.6
7 1 0 3 1 0 1.0 0 0 0 0
8 0 0 1 0 0 0.2 0 0 1 0.2
9 0 0 0 1 0 0.2 0 0 0
10 0 0 0 0 1 0.2
11 0 0 0 0 0
12 0 0 0 0
13 0 0
14
15
Only three of the ten individuals failed to re-acquire the habit of white- black discrimination more quickly than it had originally been acquired, and, in the case of these exceptions, No. 220 required exactly the same number of tests in each case, and No. 420 was placed at a slight disadvantage in the re-learning series by an interruption of the training between the seventh and the eighth series. Had his training been completed by the sixth series he too would have had the same number of tests in training and re-training. Moreover, and this is of preëminent importance for a fair interpretation of the results, in several instances even those individuals which exhibited as strong a preference for the black in the memory series as in the preliminary series re-learned more quickly than they had learned. Number 210, for example, although he gave no evidence of memory, and, in fact, chose the black more frequently in the memory series than he did in the preliminary series, re-acquired the discrimination habit in less than half the number of tests which had been necessary for the establishment of the habit originally.
TABLE 50
WHITE-BLACK TRAINING. TEN TESTS PER DAY
Females