58 



HARRY H. WYLIE 



sponses, yet served mainly, in the experimenter's opinion, 

 to overcome the emotional disturbance produced by such 

 a strange stimulus. It is very possible that if the electric 

 stimulus had had as little disturbing effect emotionally as 

 the light apparently had, the transfer effect would have 

 been more in proportion to the number of simultaneous 

 series given, and so more gradual in its increase. Prac- 

 tically the same type of result was found in the case of 

 transfer from light to sound, where two simultaneous series 

 showed very little advantage over direct transfer, while 

 four simultaneous series produced considerable advan- 

 tageous effect. 



(3) Sound to Light — Three groups of animals were first 

 taught the negative response to the sound and then were 

 transferred to the light. Group XIV was transferred 

 directly from sound to light. Group XV was given two 

 simultaneous series of sound and light before being trans- 

 ferred to light. Group XVI was given four series of simul- 

 taneous sound and light before being transferred to light. 

 The results are gathered together in the following tables. 

 Illustrative curves are given on pages 40-41. 



Group XIV 



Transferred directly from Sound to 

 Light. Summary of record for Light 



Animal 

 No. 59. 

 No. 6L 

 No. 63. 

 No. 64. 

 No. 65. 



Average. 



Trials 

 165 

 165 

 150 

 120 

 150 



150 



Series 

 11 

 11 

 10 

 8 

 10 



10 



Group XV 



Transferred with two simultaneous ser- 

 ies of Sound and Light. Summary 

 of Record for Light. 



Animal 

 No. 60. 

 No. 67. 

 No. 68. 

 No. 69. 

 No. 70. 

 No. 73. 



Average. 



Trials 

 135 

 120 

 120 

 120 

 120 

 105 



120 



Group XVI 

 Transferred with four simultaneous series of Sound and Light 

 Summary of Record for Light 



Series 

 9 



Average . 



105 



