BushR. R.MostellerF.A comparison of eight models. In BushR. R.EstesW. K. (Eds.), Studies in mathematical learning theory. Palo Alto, Calif.: Stanford Univer. Press, 1959. Pp. 293–307.
2.
HafezE. S. E.SumptionL. J.JakwayJ. S.Behaviour of swine. In HafezE. S. E. (Ed.), Behaviour in domestic animals. London: Bailliere, Tindall, & Cox, in press. Pp. 293–307.
3.
MowrerO. H.LamoreauxR. R.Fear as an intervening variable in avoidance conditioning. J. comp. Psychol., 1946, 39, 29–50.
4.
MunnN. L.Handbook of psychological research on the rat. New York: Houghton Mifflin, 1950.
5.
SolomonR. L.WynneL. C.Traumatic avoidance learning: Acquisition in normal dogs. Psychol. Monogr., 1953, 67, No. 4 (Whole No. 354).