Effect of Delay of CS Termination and Similarity between CS and Safety Signal (FS) on the Extinction of Shuttlebox-Avoidance Responding

Abstract

Two groups of 48 rats were trained on an avoidance task with a 2000-Hz tone CS. A safety signal or feedback stimulus (FS) following a hurdle response was provided by either a 4000-Hz tone (FSI) or 8000-Hz tone (FS2) for two groups, respectively. During extinction FS1 and FS2 groups were divided into four subgroups receiving 0-, 2-, 5-, or 10-sec. delay of CS offset (and therefore FS onset), respectively. FS2 facilitated acquisition but not extinction of the avoidance response. Extinction was facilitated by greater delay of CS offset and greater similarity between CS and feedback stimulus, with the two variables exerting independent additive effects. Results support the proposition that the similarity of CS and feedback stimulus and the delay of reinforcement function independently in avoidance situations.

References

Bolles

R. C.

Grossen

N. E.

Effects of an informational stimulus on the acquisition of avoidance behavior in rats. Journal of Comparative and Physiological Psychology, 1969, 68, 90–99.

Bower

Starr

Lazarovitz

Amount of response produced change in the CS and avoidance learning. Journal of Comparative and Physiological Psychology, 1965, 59, 13–17.

D'Amato

M. F.

Fazzaro

Etkin

Anticipatory responding and avoidance discrimination as factors in avoidance conditioning. Journal of Experimental Psychology, 1968, 77, 41–47.

Delprato

D. J.

Extinction of one-way avoidance and delayed warning-signal termination. Journal of Experimental Psychology, 1969, 80, 192–193.

Hearst

Some persistent problems in the analysis of conditioned inhibition. In Boakes

R. A.

Halliday

M. S.

(Eds.), Inhibition and learning. London: Academic Press, 1972. Pp. 5–39.

Kamin

L. J.

The effects of termination of the CS and avoidance of the US on avoidance learning. Journal of Comparative and Physiological Psychology, 1956, 49, 420–424.

Kamin

L. J.

The gradient of delay of secondary reward in avoidance learning. Journal of Comparative and Physiological Psychology, 1957, 50, 445–449. (a).

Kamin

L. J.

The gradient of delay of secondary reward in avoidance learning tested on avoidance trials only. Journal of Comparative and Physiological Psychology, 1957, 50, 450–456. (b).

Katzev

Extinguishing avoidance responses as a function of delayed warning signal termination. Journal of Experimental Psychology, 1967, 75, 339–344.

10.

Katzev

Henderson

R. W.

Effects of exteroceptive feedback stimuli on extinguishing avoidance responses in Fischer 344 rats. Journal of Comparative and Physiological Psychology, 1971, 74, 66–74.

11.

Knapp

R. K.

The acquisition and extinction of instrumental avoidance as a function of the escape situation. Unpublished PhD thesis, Michigan State Univer., 1960.

12.

Logan

F. A.

Incentive: How the conditions of reinforcement affect the performance of rats. New Haven: Yale Univer. Press, 1960.

13.

Mowrer

O. H.

On the dual nature of learning: A reinterpretation of “conditioning” and “problem solving.”

Harvard Educational Review, 1947, 17, 102–108.

14.

Mowrer

O. H.

Learning theory and personality dynamics. New York: Ronald, 1960.

15.

Owen

J. W.

An analysis of the fear reduction produced by warning signal termination, feedback signal onset and both events in combination. Dissertation Abstracts International, 1976, 37, 2550.

16.

Owen

J. W.

Herdegbn

R. T.

Cicala

G. A.

Warning signal termination does not function as a feedback signal. Bulletin of the Psychonomic Society, 1977, 10, 295–297.

17.

Owen

The effect of avoidance response extinction in rats of CS continuation and emotional constitution. Journal of Genetic Psychology, 1963, 13, 147–151.

18.

Woods

P. J.

Feldman

G. B.

Combination of magnitude and delay of reinforcement in instrumental escape conditioning. Journal of. Comparative and Physiological Psychology, 1966, 62, 149–151.