Abstract
Key-peck responses of two pigeons were maintained on variable-interval schedules of food reinforcement in the presence of a stuffed pigeon to study the characteristics of attack induced by that schedule. The mean interval of the schedule was increased from 15 sec to 600 sec in eight steps before an intermediate interval was reintroduced. The principal characteristics of attack were: (1) substantial attack first occurred on a variable-interval schedule of 90 sec in one pigeon and at 180 sec in the other, (2) the highest attack rates occurred on variable-interval schedules of 300 sec and 600 sec, (3) attack rate generally increased to a maximum and then decreased to a lower level across sessions at each schedule, (4) attacks developed a postreinforcement locus across the initial sessions on all schedules and, except on variable-interval schedules of 300 and 600 sec, occurred primarily in the postreinforcement period during extended training, (5) attack rates and key-peck rates were not recovered when the intermediate-length schedules were reintroduced, and (6) attack rate and key-peck rates were negatively correlated. Except for the fact that the maximum attack rates occurred at interfood intervals of 300 and 600 sec, and that attack and key-peck rates were negatively correlated, these findings have counter-parts in experiments with other reinforcement schedules.
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Selected References
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- Azrin N. H., Hutchinson R. R., Hake D. F. Extinction-induced aggression. J Exp Anal Behav. 1966 May;9(3):191–204. doi: 10.1901/jeab.1966.9-191. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cherek D. R., Pickens R. Schedule-induced aggression as a function of fixed-ratio value. J Exp Anal Behav. 1970 Nov;14(3):309–311. doi: 10.1901/jeab.1970.14-309. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cherek D. R., Thompson T., Heistad G. T. Responding maintained by the opportunity to attack during an interval food reinforcement schedule. J Exp Anal Behav. 1973 Jan;19(1):113–123. doi: 10.1901/jeab.1973.19-113. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cohen P. S., Looney T. A. Schedule-induced mirror responding in the pigeon. J Exp Anal Behav. 1973 May;19(3):395–408. doi: 10.1901/jeab.1973.19-395. [DOI] [PMC free article] [PubMed] [Google Scholar]
- FLESHLER M., HOFFMAN H. S. A progression for generating variable-interval schedules. J Exp Anal Behav. 1962 Oct;5:529–530. doi: 10.1901/jeab.1962.5-529. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Flory R. Attack behavior as a function of minimum inter-food interval. J Exp Anal Behav. 1969 Sep;12(5):825–828. doi: 10.1901/jeab.1969.12-825. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gentry W. D. Fixed-ratio schedule-induced aggression. J Exp Anal Behav. 1968 Nov;11(6):813–817. doi: 10.1901/jeab.1968.11-813. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hutchinson R. R., Azrin N. H., Hunt G. M. Attack produced by intermittent reinforcement of a concurrent operant response. J Exp Anal Behav. 1968 Jul;11(4):489–495. doi: 10.1901/jeab.1968.11-489. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Knutson J. F. Aggression during the fixed-ratio and extinction components of a multiple schedule of reinforcement. J Exp Anal Behav. 1970 Mar;13(2):221–231. doi: 10.1901/jeab.1970.13-221. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Richards R. W., Rilling M. Aversive aspects of a fixed-interval schedule of food reinforcement. J Exp Anal Behav. 1972 May;17(3):405–411. doi: 10.1901/jeab.1972.17-405. [DOI] [PMC free article] [PubMed] [Google Scholar]