In Experiment I, rats were exposed to a classical relationship between a clicker-light compound and response-independent food. Conditioning to the light was blocked if the clicker had previously served as a classical signal for food, but not if it had been established as a discriminative stimulus for food-reinforced lever pressing. In Experiment II, a tone-light compound served as a discriminative stimulus for lever pressing. Control by the light was blocked if the tone was independently trained as a discriminative stimulus, but not if it was trained as a classical signal for response-independent food. These results suggest that discriminative stimuli do not come to control appetitive instrumental responding by virtue of their implicit classical relationship to the instrumental reinforcer.
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References
1.
BlanchardR.HonigW. K. (1976). Surprise value of food determines its effectiveness as a reinforcer.Journal of Experimental Psychology: Animal Behavior Processes2, 67–74.
2.
EllisonG. D.KonorskiJ. (1964). Separation of the salivary and motor responses in instrumental conditioning.Science146, 1071–2.
3.
EstesW. K. (1943). Discriminative conditioning. I. A discriminative property of conditioned anticipation.Journal of Experimental Psychology32, 150–5.
4.
GarrudP.GoodallG.MackintoshN. J.Overshadowing of a stimulus-reinforcer association by an instrumental response.Quarterly Journal of Experimental Psychology33B, (in press).
5.
HollandP. C. (1977). Conditioned stimulus as a determinant of the form of the Pavlovian conditioned response.Journal of Experimental Psychology: Animal Behavior Processes3, 77–104.
6.
JenkinsH. M. (1977). Sensitivity of different response systems to stimulus-reinforcer and response-reinforcer relations.Operant Pavlovian Interactions.DavisH.HurwitzH. M. B.Hillsdale, N.J.: Lawrence Erlbaum Associates.
7.
KaminL. J. (1968). ‘Attention-like’ processes in classical conditioning.Miami Symposium on the Prediction of Behavior: Aversive Stimulation.JonesM. R.Miami: University of Miami Press.
8.
KarpickeJ.ChristophG.PetersonG.HearstE. (1977). Signal location and positive versus negative conditioned suppression in the rat.Journal of Experimental Psychology: Animal Behavior Processes3, 105–18.
9.
KonorskiJ. (1948). Conditioned Reflexes and Neuron OrganizationCambridge: Cambridge University Press.
10.
LolordoV. M.McMillanJ. C.RileyA. L. (1974). The effects upon food-reinforced pecking and treadle-pressing of auditory and visual signals for response-independent food.Learning and Motivation5, 24–41.
11.
MackintoshN. J. (1974). The Psychology of Animal LearningLondon: Academic Press.
12.
MackintoshN. J.DickinsonA. (1979). Instrumental (Type II) conditioning.Mechanisms of Learning and Motivation.DickinsonA.BoakesR. A.Hillsdale, N.J.: Lawrence Erlbaum Associates.
13.
MellgrenR. L.OstJ. W. P. (1969). Transfer of Pavlovian differential conditioning to an operant discrimination.Journal of Comparative and Physiological Psychology67, 390–4.
14.
MowrerO. H. (1960). Learning Theory and BehaviorNew York: Wiley.
15.
NeelyJ. H.WagnerA. R. (1974). Attentuation of blocking with shifts in reward: the involvement of schedule-generated contextual cues.Journal of Experimental Psychology102, 751–63.
16.
PavlovI. P. (1932). The reply of a physiologist to psychologists.Psychological Review39, 91–127.
17.
PearceJ. M.HallG. (1978). Overshadowing the instrumental conditioning of a lever-press response by a more valid predictor of the reinforcer.Journal of Experimental Psychology: Animal Behavior Processes4, 356–67.
18.
RescorlaR. A.SolomonR. L. (1967). Two-process learning theory: Relationships between Pavlovian conditioning and instrumental learning.Psychological Review74, 151–82.
19.
St Claire-SmithR. (1979). The overshadowing of instrumental conditioning by a stimulus that predicts reinforcement better than the response.Animal Learning and Behavior7, 224–8.
20.
SchwartzB. (1976). Positive and negative conditioned suppression in the pigeon: effects of the locus and modality of the CS.Learning and Motivation7, 86–100.
21.
SkinnerB. F. (1938). The Behavior of OrganismsNew York: Appleton-Century-Crofts.
22.
SpenceK. W. (1956). Behavior Theory and ConditioningNew Haven, Conn.: Yale University Press.
23.
TrapoldM. A.LawtonG. W.DickR. A.GrossD. M. (1968). Transfer of training from differential classical to differential instrumental conditioning.Journal of Experimental Psychology76, 568–73.
24.
TrapoldM. A.OvermierJ. B. (1972). The second learning process in instrumental learning.Classical Conditioning II: Current Research and Theory.BlackA. H.ProkasyW. F.New York: Appleton-Century-Crofts.
25.
WagnerA. R. (1969). Stimulus validity and stimulus selection in associative learning.Fundamental Issues in Associative Learning.MackintoshN. J.HonigW. K.Halifax: Dalhousie University Press.
