Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"schedules of reinforcement"”.
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Effects of Concurrent Fixed Interval-fixed Ratio Schedules of Reinforcement on Human Responding.
… human performances sensitive to concurrent schedules of reinforcement. Five participants produced performances observed to be under temporal and ratio control of concurrent fixed interval-fixed ratio schedules. Two aspects of interaction between FI and FR schedules were distinguishable in …
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The Effects of Extinction on Human Performance Following Exposure to Fixed Ratio Schedules of Reinforcement
This experiment examined the effects of extinction on rate of responding and several topographical and temporal measures in adult humans. Three college students were trained to type the sequence 1•5•3 on a numeric keypad on a computer. The subjects were exposed to different fixed-ratio schedules of …
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Determining the Effects of Basic Feedback and Directive Feedback Environments on Task Productivity, Accuracy, Perceived Stress, Control and Demand under Forced Choice and Mixed Choice Progressive Ratio Schedules of Reinforcement
… feedback may serve as one or more types of stimulation in the behavioral contingency. In organizational settings, leaders, managers, and workers benefit from well-designed behavior control systems. These systems may contribute at differing levels of efficacy towards maximizing measures of …
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Parametric Analysis of Fixed Lag Schedule Performance in Humans
Response variability is an operant dimension of behavior and may be controlled by contingent reinforcement. It has been demonstrated that variable responding may be modified through reinforcement contingent on variability. An emerging body of literature shows that a lag schedule is effective in …
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Human Suboptimal Choice: Identifying Alternative Procedures
… choice refers to choices that result in leaner schedules of reinforcement over richer schedules (Spetch et al., 1990). This has been demonstrated with non-human animals using procedures wherein two alternatives correspond to different stimuli and different probabilities of receiving rewards. In …
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Behavioral Models of Cocaine Use Disorder
The complex set of symptoms associated with substance use disorder has made creating animal models with high predictive validity difficult. One tactic to help translate results from animal studies to humans is to separate the symptoms of substance use disorder into two broad categories of …
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The Effect of Shifts in Reward Magnitude and Changes of Schedule of Reinforcement on Resistance to Extinction
… problem concerned the resistance to extinction of an alley running response as a function of various combinations of reward sizes (l or 10 pellets) and schedules of reinforcement (50 or 100%). Three experimental phases were used (acquisition, shift of reward, and extinction). Three measures were …
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Interazioni neurotrasmettitoriali nel meccanismo d’azione della cocaina: ruolo della serotonina e dell’adenosina
… areas. To investigate the behavioral counterpart of this interaction I studied in rats the effect of 5-HT6 receptor blockade on cocaine stimulated overflow of DA in dialysates from the PFCX and from the NAc Shell and on cocaine i.v. selfadministration. Pretreatment with the 5-HT6 antagonist …
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Effects of Reinforcement History on Stimulus Control Relations
… relations are behavioral units the effects of environmental variables on stimulus-response relations should be similar to the effects of environmental variables on single response topographies. This experiment analyzed the effects of reinforcement history on the probability of …
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Vocal Variability in Autism Spectrum Disorders: Assessment and Intervention to Increase Novel Vocalizations in Non-Verbal Children
… typical development and with the acquisition of new skills, including vocal communication. For many children with ASD who are unable to imitate others and who have limited vocal repertoires, few vocal training interventions are available. Research on operant variability, however, indicates …
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An Evaluation of the Effects of Fixed-Time Schedules on Response Maintenance
Response-independent schedules of reinforcement (e.g., fixed-time schedules) have typically been shown to decrease the rate of responding. However, researchers have suggested that responses may maintain under response-independent schedules, although it is currently unclear as to what mechanisms are …
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Matching Equation: Teacher Rates of Praise and Reprimands
… in student behaviors matching onto available reinforcement rates. While some studies have found that student on-task behaviors matched contingent teacher attention around half the observations (Martens et al., 1990), other studies have found that first grade students’ on-task behavior matched …
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An investigation of the relationship between rate of responding during and acquisition and resistance to experimental extinction.
The aim of the present series of experiments was to show that a direct relationship exists between two measures of response strength- rate of responding and resistance to extinction. Experiments I and II used a different subjects design, with three pigeons, one at each level of the independent …
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Control of Pausing in Rich-Lean Transitions by Spatially Localized and Spatially Diffuse Stimuli
… from rich (favorable) to lean (less favorable) schedules of reinforcement (i.e., rich-lean transitions) can disrupt operant behavior. Previous literature suggests that disruptions in these transitions could occur because individuals engage in other behavior that reduces contact with the …
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Sensory Extinction : Its Effects on Target Sterotyped Behaviors in Adjacent Non-Programmed Situations
… the potential exists for an alternation between schedules of reinforcement and extinction. Studies from the animal literature indicate that this alternation can give rise to schedule interactions and result in possible unwanted effects on the target stereotypy. This study will assess possible …
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Changeover delay and concurrent schedules
Domestic hens served as subjects in a series of three experiments investigating the effects of changeover delay (COD) on concurrent variable-interval schedule performance. The first experiment involved manipulations of the relative reinforcement rates on the two schedules presented on two separate …
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Effects of blockade of muscarinic receptors in the ventral tegmental area : attenuation of cocaine reward, but enhancement of locomotor activity and dopamine overflow in the nucleus accumbens
… study was designed to determine the involvement of cholinergic projections to the ventral tegmental area in the rewarding effects of cocaine. Bilateral intracranial injections of the muscarinic receptor antagonist atropine into the ventral tegmental area attenuated the rewarding effects of …
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Behavioral Contrast and Alternative Response Key Availability
… Problem. This study investigated the interaction of schedules of reinforcement on behavior, replicating and extending Keller's (1 974) research. Expanded methodology included two control manipulations designed to clarify Keller's previously ambiguous findings. The influence of stimulus properties …
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