Five autoshaping experiments with pigeons examined the effects of presenting in compound two stimuli that had individually been paired with food. The rate of responding during the compound was the same as for the individual stimuli when the stimulus duration was 10 sec. When the duration of the stimuli was 30 sec, the compound elicited a higher response rate than its components. This enhanced rate of responding during the compound was evident only for the initial portion of each trial. Moreover, the enhanced rate of responding was no greater than for a compound composed of an excitatory and a neutral element. These results present difficulties for both elemental and configural theories of conditioning.
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References
1.
AydinA.PearceJ. M. (1994). Prototype effects in categorization by pigeons.Journal of Experimental Psychology: Animal Behavior Processes20, 264–277.
2.
ForbesD. T.HollandP. C. (1985). Spontaneous configuring in conditioned flavor aversion.Journal of Experimental Psychology: Animal Learning Behavior Processes11, 224–240.
3.
HullC. L. (1943). Principles of behavior.New York: Appleton-Century-Crofts.
4.
HendryJ. S. (1982). Summation of undetected excitation following extinction of the CER.Animal Learning and Behavior10, 476–482.
5.
KehoeE. J. (1986). Summation and configuration in conditioning of the rabbit's nictitating membrane response to compound stimuli.Journal of Experimental Psychology: Animal Behavior Processes12, 186–195.
6.
KehoeE. J.GrahamP. (1988). Summation and configuration: Stimulus compounding and negative patterning in the rabbit.Journal of Experimental Psychology14, 320–333.
7.
KehoeE. J.HomeA. J.HomeP. S.MacraeM. (1994). Summation and configuration between and within sensory modalities in classical conditioning of the rabbit.Animal Learning and Behavior22, 19–26.
8.
KonorskiJ. (1948). Conditioned reflexes and neuron organization.Cambridge: Cambridge University Press.
9.
LongC. K.AllenJ. D. (1974). Stimulus compounding in pigeons.Bulletin of the Psychonomic Society4, 95–97.
10.
MeltzerD.HammR. J. (1976). Response summation in the pigeon.Bulletin of the Psychonomic Society7, 515–518.
11.
MillerL. (1971). Compounding of discriminative stimuli from the same and different sensory modalities.Journal of the Experimental Analysis of Behavior16, 337–342.
12.
MillerL. (1974). Compounding of discriminative stimuli from the same and different sensory modalities which maintain responding on separate levers.Bulletin of Psychonomic Society2, 426–428.
13.
MillierP. J.BealeI. L. (1977). Response summation to a compound stimulus in a context of choice.Journal of the Experimental Analysis of Behavior27, 17–21.
14.
PavlovI. P. (1927). Conditioned reflexes.New York: Oxford University Press.
15.
PavlovI. P. (1928). Lectures on conditioned reflexes.New York: International Publishers.
16.
PearceJ. M. (1987). A model for stimulus generalization in Pavlovian conditioning.Psychological Review94, 61–83.
17.
PearceJ. M. (1994). Similarity and discrimination: A selective review and a connectionist model.Psychological Review101, 587–607.
18.
PearceJ. M.HallG. (1980). A model for Pavlovian learning: Variations in the effectiveness of conditioned but not of unconditioned stimuli.Psychological Review87, 532–552.
19.
PearceJ. M.RedheadE. S. (1993). The influence of an irrelevant stimulus on two discriminations.Journal of Experimental Psychology: Animal Behavior Processes19, 180–190.
20.
PearceJ. M.WilsonP. N. (1991). Effects of extinction with a compound conditioned stimulus.Journal of Experimental Psychology: Animal Behavior Processes17, 151–162.
21.
RescorlaR. A. (1967). Inhibition of delay in Pavlovian fear conditioning.Journal of Comparative and Physiological Psychology64, 114–120.
22.
RescorlaR. A.WagnerA. R. (1972). A theory of Pavlovian conditioning: Variations in the effectiveness of reinforcement and non-reinforcement.Classical conditioning II: Current research and theory.BlackA. H.ProkasyW. F.New York: Appleton-Century-Crofts.64–69.
23.
SpenceK. W. (1936). The nature of discrimination learning in animals.Psychological Review43, 427–449.
24.
Van HoutenR.O'LearyK. D.WeissS. J. (1970). Summation of conditioned suppression.Journal of the Experimental Analysis of Behavior13, 75–81.
25.
WagnerA. R. (1971). Elementary associations.Essays in neobehaviorism: A memorial volume to Kenneth W. Spence.KendlerH. H.SpenceJ. T.New York: Appleton-Century-Crofts.187–213.
26.
WeissS. J. (1969). Attentional processes along a composite stimulus continuum during free-operant summation.Journal of Experimental Psychology82, 22–27.
27.
WeissS. J. (1971). Discrimination training and stimulus compounding: Consideration of non-reinforcement and response differentiation consequences of Sδ.Journal of the Experimental Analysis of Behavior15, 387–402.
28.
WhitlowJ. W.WagnerA. R. (1972). Negative patterning in classical conditioning: Summation of response tendencies to isolable and configural components.Psychonomic Science27, 299–301.
29.
WolfM. M. (1963). Some effects of combined Sδs.Journal of the Experimental Analysis of Behavior6, 343–347.
