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Full-Text Articles in Psychology
Effects Of Subchronic Dietary Lead Exposure On Dmtp And Dnmtp Performance In Fisher 344 Rats, Joshua D. Vardigan
Effects Of Subchronic Dietary Lead Exposure On Dmtp And Dnmtp Performance In Fisher 344 Rats, Joshua D. Vardigan
Masters Theses
Recent attention has focused on the possibility that even low-level Pb exposure can produce subtle neurological impairments in the absence of overt signs of toxicity. Previous behavioral assessments of learning and memory using DMTS procedures have documented learning impairments in monkeys exposed to Pb during early postnatal development, and although a variety of operant behavioral assays have documented detrimental effects of dietary Pb treatment in rats, the DMTS procedure has not been examined in rats following short-term low levels of Pb through dietary exposure. Thus, the objective of this study was to measure the degree of cognitive impairment produced by …
Neuropsychopharmacological Investigations Of Mdma/Cocaine Combinations, John J. Panos
Neuropsychopharmacological Investigations Of Mdma/Cocaine Combinations, John J. Panos
Masters Theses
Despite the popularity of polydrug abuse among recreational MDMA users, relatively few controlled experimental studies have documented the neurobehavioral effects of MDMA in combination with other abused substances. In this study, the neurochemical and behavioral effects of MD MA/cocaine combinations were assessed using in vivo microdialysis with simultaneous measurement of locomotor activity (LMA). Rats were administered cocaine (10 mg/kg or 20 mg/kg, IP), MDMA (1.5 mg/kg or 3.0 mg/kg, IP) or combinations of cocaine and MDMA during microdialysis experiments. Microdialysis samples were collected every 30 min for three hours prior to drug injections. Following drug administration, six additional 30 min …
Evaluation Of An Outpatient Training Service For Children With Autism Spectrum Disorders And Their Families, Britt Winter
Evaluation Of An Outpatient Training Service For Children With Autism Spectrum Disorders And Their Families, Britt Winter
Masters Theses
Autism spectrum disorders have a substantial impact on the lives of families and can result in a variety of enrichments to the family environment as well as certain specific stressors (Hecimovic & Gregory, 2005; Tidmarsh & Volkmar, 2003). One service that has proven effective for treatment of individuals with autism spectrum disorders as well as improvement in family dynamics is parent training (Schreibman, 1988). The current study examined 46 individual client files from an outpatient parent training clinic serving children with autism spectrum disorders. Parents were taught to implement interventions for skill acquisition with their children using a behavioral skills …
Functional Assessment Of Problem Behavior In Children With Autism Spectrum Disorders: A Review Of 32 Cases, Jessa R. Love
Functional Assessment Of Problem Behavior In Children With Autism Spectrum Disorders: A Review Of 32 Cases, Jessa R. Love
Masters Theses
The prevalence of autism spectrum disorders among children aged 4 to 17 years is approximately 5.5 to 5.7 out of 1000 children (Centers for Disease Control, 2006). It is not uncommon for children with these disorders to display a wide range of problem behavior (e.g., Farrar-Schneider, 1992; Oswald et al., 1992). While a number of studies have reported aggregated data on the reinforcement functions of such problem behavior, none have reported the distribution of functions with a sample comprised solely of individuals on the autism spectrum. Thus, the purpose of this study was to examine individual client data from an …
Behavioral Tolerance Under Variable Ratio Schedules Of Reinforcement, Barry Eshkol Adelman
Behavioral Tolerance Under Variable Ratio Schedules Of Reinforcement, Barry Eshkol Adelman
Dissertations
Previous studies (e.g., Hoffman, Branch, & Sizemore, 1987) have demonstrated that greater drug tolerance develops in responding under fixed-ratio (FR) schedules of reinforcement when the schedule parameter is small than when it is large; little research has been done on related schedules such as variable-ratio (VR). In Experiment 1, three pigeons responded under a multiple FR 5 FR 125 VR 5 VR 125. A range of prechronic doses of cocaine produced dose-dependent reductions in response rates under the component schedules. Following chronic dosing with daily administrations of 5.6 mg/kg, similar dose-response curves were derived by substitutions of the usual dose. …