Schedule induced behavior: A review of its generality, determinants and pharmacological data

Wallace, Mark C.; Singer, George

doi:10.1016/0091-3057(76)90114-3

Cited by 71 publications

(17 citation statements)

References 59 publications

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“…SIP, in which animals have been observed to drink more in a single 2-hr session than the amount they consume daily [25], is considered an adjunctive behavior [26] that is non-regulatory in nature [27]. In humans, primary polydipsia has been observed to be ‘excessive,’ ‘persistent’, ‘non-regulatory’, and ‘without physiologic cause’ [1] and in this way is similar to SIP.…”

Section: Discussionmentioning

confidence: 99%

Increased Drinking following Social Isolation Rearing: Implications for Polydipsia Associated with Schizophrenia

2013

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Primary polydipsia, excessive drinking without known medical cause, is especially associated with a diagnosis of schizophrenia. We used animal models of schizophrenia-like symptoms to examine the effects on schedule-induced polydipsia: post-weaning social isolation rearing, subchronic MK-801 treatment (an NMDA-receptor antagonist) or the two combined. Male, Sprague-Dawley rats reared in groups or in isolation beginning at postnatal day 21 were further divided to receive subchronic MK-801 (0.5 mg/kg twice daily) or saline for 7 days beginning on postnatal day 62. Following a 4-day withdrawal period, all groups were trained on a schedule-induced polydipsia paradigm. Under food-restriction, animals reared in isolation and receiving food pellets at 1-min intervals developed significantly more drinking behavior than those reared with others. The addition of subchronic MK-801 treatment did not significantly augment the amount of water consumed. These findings suggest a predisposition to polydipsia is a schizophrenia-like behavioral effect of post-weaning social isolation.

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Section: Discussionmentioning

confidence: 99%

Increased Drinking following Social Isolation Rearing: Implications for Polydipsia Associated with Schizophrenia

2013

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“…Clark (1962) was quickly challenged by Stein (1964), who found that rats did not continue to lick a dry tube, that drinking was not sustained when the rats were switched to a liquid reinforcer, and that drinking occurred postpellet rather than prepellet. There ensued hundreds of research articles on the topic (for reviews, see Christian, Schaeffer, & King, 1977;Wallace & Singer, 1976) and a dozen hypotheses as to its nature, including displacement activity, displaced consummatory activity, activation in ethological, physiological, or behavioral senses, induction, induced variation, frustration, and reinforcement. Some of the empirical results were in conflict because of the path-dependent nature of adjunctive responses: If a response is allowed or encouraged early in conditioning, it could persist through conditions that, had they been present at the start, would have prevented its emergence (e.g., Chapman & Richardson, 1974).…”

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Adjunctive behaviors are operants

Killeen

Pellón

2013

Learn Behav

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Adjunctive behaviors such as scheduleinduced polydipsia are said to be induced by periodic delivery of incentives, but not reinforced by them. That standard treatment assumes that contingency is necessary for conditioning and that delay of reinforcement gradients are very steep. The arguments and evidence for this position are reviewed and rejected. In their place, data are presented that imply different gradients for different classes of responses. Proximity between response and reinforcer, rather than contingency or contiguity, is offered as a key principle of association. These conceptions organize a wide variety of observations and provide the rudiments for a more general theory of conditioning.Keywords Adjunctive . Conditioning . Contingency . Contiguity . Proximity . Schedule inducedResponse acquisition with delayed reinforcement is a robust phenomenon that may not depend on a mechanically defined response or an immediate external stimulus change to mediate the temporal gap between response and reinforcer. Critchfield and Lattal (1993, p. 373) Schedule-induced drinking as the prototypical adjunctive behavior: Arguments against reinforcement Ever since the laboratory discovery of adjunctive behavioralso known as schedule-induced or interim behavior-by John Falk (1961), analysts have treated these anomalies as belonging to a separate class of behavior, induced by incentives such as periodic food, but not reinforced by them. The discovery of adjunctive behavior was a bombshell in the behavioral community, since it seemed an exception to the orderly account of all behavior subsumed under the tripartite hegemony of operant, respondent, and unconditioned responses. What were the implications for the Skinnerian project of applied behavior analysis, if so substantial a proportion of the behavior that was induced by reinforcement was adamant to control by reinforcement? In the case of schedule-induced polydipsia, Falk (1971) voiced the contemporary amazement:It was an outright absurd [finding]. It was absurd because food deprivation in rats yields a decrease in water intake, not an increase. It was absurd because heating a large quantity of room-temperature water to body heat and expelling it as copious urine is wasteful for an animal already pressed for energy stores by food deprivation. It is absurd for an animal to drink itself into a dilutional hyponatremia bordering on water intoxication. But perhaps most absurd was not the lack of a metabolic or patho-regulatory reason for the polydipsia, but the lack of an acceptable behavioral account. (p. 577) Falk detailed the arguments against various "acceptable behavioral accounts," which he summarized in the following: "Polydipsia is not the result of food delivery directly or adventitiously reinforcing water intake. Nor does it serve a problem-solving mediational, or timing function. Furthermore, drinking is not an unconditioned

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“…"Thirst" explanations hold that intermittent presentation of food exerts a specific facilitatory effect on drinking, for example by stimulating oral dehydration receptors (Stein, 1964)or by causing a fall in blood glucose level (Freed, Zec, & Mendelson, 1977). "General activation" explanations, on the other hand, hold that intermittent presentation of food exerts a more or less general facilitatory effect on nonfeeding behaviors, via a state or process termed frustration (e.g., Thomka & Rosellini, 1975), arousal (e.g., Killeen, 1975;Brett & Levine, 1979), general motor excitability (Wayner, 1974), or stress (e.g., Wallace & Singer, 1976).…”

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Schedule-induced wood-chewing in rats and its dependence on body weight

Roper

Crossland

1982

Animal Learning & Behavior

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In Experiment I, 12 rats were exposed to an FT 60 schedule of food reinforcement, followed either by extinction or by a massed-food control condition, in the presence of a wood block. In 9 rats, wood-chewing behavior increased systematically during the FT 60 condition and declined again during extinction or massed food, while the other 3 rats showed virtually no chewing behavior at any stage of the experiment. In Experiment 2, frequency and bout duration of wood-ehewing under an FT 60 schedule of food reinforcement declined as body weight increased, in 7 rats. We conclude that wood-chewing qualifies as a schedule-induced behavior, and that it resembles schedule-induced drinking in its dependence on body weight. Unlike drinking, however, induced chewing occupied the middle region of the 60-sec interreinforcement interval, declined markedly within the session, and showed considerable within-and between-subject variability. Falk (1961) found that when rats were allowed to obtain food according to an intermittent (VI 60-sec) schedule of food reinforcement, and were given concurrent free access to a water bottle, they developed the habit of drinking immediately after eating each food pellet. Because the rats' cumulative intake of water under these circumstances was abnormally large, Falk referred to the postpellet drinking as "schedule-induced polydipsia." Schedule-induced polydipsia has been extensively studied in the subsequent two decades, but its cause remains obscure: numerous explanations have been offered, but none has proved satisfactory (see reviews by Falk, 1971;Segal, 1972;Staddon, 1977).Explanations of schedule-induced drinking have been of two distinct types, which may be termed "thirst" explanations and "general activation" explanations, respectively (Roper, 1980b). "Thirst" explanations hold that intermittent presentation of food exerts a specific facilitatory effect on drinking, for example by stimulating oral dehydration receptors (Stein, 1964)or by causing a fall in blood glucose level (Freed, Zec, & Mendelson, 1977). "General activation" explanations, on the other hand, hold that intermittent presentation of food exerts a more or less general facilitatory effect on nonfeeding behaviors, via a state or process termed frustration (e.g., Thomka & Rosellini, 1975), arousal (e.g., Killeen, 1975; Brett & Levine, 1979), general motor excitability (Wayner, 1974), or stress (e.g., Wallace & Singer, 1976).At present most investigators seem to favor a gen- eral activation account, on the grounds that schedule induction extends across a variety of species, reinforcers, and behaviors. But whether one regards induction as a general phenomenon depends on the stringency of one's definition. The term "scheduleinduced" is commonly applied to any activity that occurs during interreinforcement intervals, regardless of its frequency of occurrence, whereas a stringent demonstration of induction requires that the behavior in question be shown to occur more frequently in association with a schedule of reinforcement than ...

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Schedule induced behavior: A review of its generality, determinants and pharmacological data

Cited by 71 publications

References 59 publications

Increased Drinking following Social Isolation Rearing: Implications for Polydipsia Associated with Schizophrenia

Increased Drinking following Social Isolation Rearing: Implications for Polydipsia Associated with Schizophrenia

Adjunctive behaviors are operants

Schedule-induced wood-chewing in rats and its dependence on body weight

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