1. Variables determining the effects of delay in reinforcement;Ferster;J. exp. Anal. Behav.,1965
2. The green ginger jar;Judson,1962
3. Free-operant preference for one of two stories: A methodological note;Lovitt;J. educ. Psychol.,1966
4. Narrative rate preferences of normal and retarded males as assessed by conjugate reinforcement;Lovitt,1965
5. Making stories talk,1962