300 



LINUS WARD KLINE 





i3 it is* ii n ft H 



GRAPH III. STIMULUS CURVES 



Unpleasant Stimulus: > 



\Subject G = 



Pleasant Stimulus: Subject B = 



G-rapft 





Percent 

 improve 



ment. 





ob*/ t i iv ii ii /<j /f iff Kg /7 /gr /y J,0 . 

 GRAPH IV. STIMULUS CURVES 



Unpleasant Stimulus: Subject H = 

 Pleasant Stimulus: Subject C = 



i3 *4 



