THE INTERFERENCE OF VISUAL HABITS 177 



the two curves is interesting in view of the different absolute 

 lengths of time involved in the formation of the two types of 

 habits. 



Curve B presents the results for habit 2 for all rats save No. 

 15. It is a curve of progress and not of completed learning. 

 Curve C is the record for rat 15 on habit 2. The curve is irreg- 

 ular in its first part. Curves A, B, and C indicate that so far 

 as rate of error elimination is concerned, habit interference has 

 been most prominent in the first six-tenths of the curves. Dr. 

 Hunter's results also indicated that the six-tenths point was a 

 turning point in the relearning process. The situation may be 

 but a coincidence, however. 



CONCLUSIONS 



1. A simple visual habit of the type here studied will inter- 

 fere tremendously with the formation of another visual habit 

 of opposite kind. This interference may practically prevent the 

 formation of the second habit. 



2. A comparison of our data and Dr. Hunter's indicates that 

 the white rat learns visual habits much more readily than similar 

 auditory habits. 



