The effect of correlated amount of reward on performance on a fixed-schedule of reinforcement.

Hendry, Derek P.

doi:10.1037/h0046507

Cited by 13 publications

(34 citation statements)

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“…In addition, there was no detectable effect (except possibly in the case of X2) of increasing the discrepancy between the large and small amounts of reward. The limited effect of the differential reinforcement procedure contrasts with the large effect of a similar procedure used in conjunction with a fixed-interval schedule (Hendry, 1962). This is more surprising in view of the extremely small amount of reward (0.02 ml) given for short IRTs throughout most of the present experiment.…”

Section: Resultscontrasting

confidence: 45%

“…Response rate on a fixed-interval schedule can be controlled within wide limits by making amount of reward depend on the length of the final IRT (Hendry, 1962). The purpose of the present experiment was to test the generality of the previous result by determining how performance on a fixed-ratio schedule would be affected by giving long final IRTs a larger amount of reward.…”

mentioning

confidence: 99%

“…The experimental animals, with one exception, developed superstitious behavior and maintained slow responding throughout the ratio. However, some features of the results pointed to a persistent influence of the factors which favor short IRTs.Response rate on a fixed-interval schedule can be controlled within wide limits by making amount of reward depend on the length of the final IRT (Hendry, 1962 The Ss were initially given magazine training and CRF, followed by FR 5. After the delivery of each reinforcement, the white signal lamp above the lamp went off for 30 sec.…”

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confidence: 99%

“…Response rate on a fixed-interval schedule can be controlled within wide limits by making amount of reward depend on the length of the final IRT (Hendry, 1962 The Ss were initially given magazine training and CRF, followed by FR 5. After the delivery of each reinforcement, the white signal lamp above the lamp went off for 30 sec.…”

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confidence: 99%

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PERFORMANCE ON A FIXED‐RATIO SCHEDULE WITH CORRELATED AMOUNT OF REWARD¹

Hendry

Van-Toller

1964

J Exper Analysis Behavior

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Four rats were trained to bar press on FR 9 TO 30 sec. They were reinforced with a large or small amount of water according to whether their final IRT was long or short respectively. Four control rats always received the small amount of reinforcement. The control animals produced the high rates of responding typical of fixed-ratio performance. The experimental animals, with one exception, developed superstitious behavior and maintained slow responding throughout the ratio. However, some features of the results pointed to a persistent influence of the factors which favor short IRTs.Response rate on a fixed-interval schedule can be controlled within wide limits by making amount of reward depend on the length of the final IRT (Hendry, 1962 The Ss were initially given magazine training and CRF, followed by FR 5. After the delivery of each reinforcement, the white signal lamp above the lamp went off for 30 sec. During this time responses were neither reinforced nor counted towards the next ratio requirement. The schedule is abbreviated as FR 5 TO 30". After two sessions of FR 5 TO 30" the schedule was FR 9 TO 30" for a further 70 sessions.The water reinforcement was either a large amount or a small amount. The actual volumes varied during the experiment. The Cs always received the small amount on the final bar-press. The Xs received the small amount if their final IRT was shorter than a criterion, and the large amount if it was longer. Because higher rates produce smaller amounts of reinforcement, this procedure has been called negatively correlated amount of reward. The actual relation between the final IRT and the reward is called the "terms" (Logan, 1960). The terms were chosen on the basis of performance in the previous session so that about half of the rewards would be large. For the first 23 sessions, and during the preliminary training on FR 5 TO 30", the amounts of reward were 0.05 ml and 0.25 ml. During sessions 24-50 the amounts were 0.02 ml and 0.10 ml, and thereafter 0.02 ml and 0.16 ml.After session 59, a piece of brass angle was attached to the wall below the bar, for the Xs 207 VOLUME 7, NUMBER 2 MARCH, 1 964

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Section: Resultscontrasting

confidence: 45%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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PERFORMANCE ON A FIXED‐RATIO SCHEDULE WITH CORRELATED AMOUNT OF REWARD¹

Hendry

Van-Toller

1964

J Exper Analysis Behavior

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“…In a related experiment, Hendry (1962) showed that rats would respond at a lower rate throughout a fixedinterval schedule of food reinforcement when larger amoWlts of food were contingent upon long terminal inter-response times. The individual data in the present experiment reveal that each S's overall rate of key pecking was virtually Wlaffected by the condition employed.…”

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confidence: 99%