Abstract

References
1.
Greenspoon
J.
The reinforcing effect of two spoken sounds on the frequency of two responses . American Journal of Psychology , 1955 , 68 , 409 –416 .
2.
Krasner
L.
Studies of the conditioning of verbal behavior . Psychological Bulletin , 1958 , 55 , 148 –165 .
3.
Salzinger
A.
Experimental manipulation of verbal behavior: A review . Journal of General Psychology , 1959 , 61 , 65 –94 .
4.
Wilcoxon
F.
Individual comparisons by ranking methods . Biometrics , 1945 , 4 , 80 –83 .
