84 



HAROLD C. BINGHAM 



Exclusive of series 3, as reported in table 15, there is very 

 little evidence of learning before series 10. The high record in 



TABLE 15 



Measurement of Learning in terms of Correct (+) Responses, Trials at Outside Corners, 



Trials at Stimuli, and Trials at Inside Corners 



* Brightness reversals at beginning of series 11. 



series 3 is probably due to a combination of greater relative 

 brightness with the + stimulus for the purpose of hurrying 

 the discrimination. Although brightness reversal was not 



