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The Role Of Dopamine In Reinforcement: Changes In Reinforcement Sensitivity Induced By D1-Type, D2-Type, And Nonselective Dopamine Receptor Agonists, Natalie Bratcher, Valeri Farmer-Dougan, James Dougan, Byron Heidenreich, Paul Garris
The Role Of Dopamine In Reinforcement: Changes In Reinforcement Sensitivity Induced By D1-Type, D2-Type, And Nonselective Dopamine Receptor Agonists, Natalie Bratcher, Valeri Farmer-Dougan, James Dougan, Byron Heidenreich, Paul Garris
Scholarship
Dose-dependent changes in sensitivity to reinforcement were found when rats were treated with low, moderate, and high doses of the partial dopamine D1-type receptor agonist SKF38393 and with the nonselective dopamine agonist apomorphine, but did not change when rats were treated with similar doses of the selective dopamine D2-type receptor agonist quinpirole. Estimates of bias did not differ significantly across exposure to SKF38393 or quinpirole, but did change significantly at the high dose of apomorphine. Estimates of goodness of fit (r2) did not change significantly during quinpirole exposure. Poor goodness of fit was obtained for the high doses of SKF38393 …
Parent-Teacher Collaboration For Students With Autism Spectrum Disorders: The Role Of Teacher Training, Amber Hays '05
Parent-Teacher Collaboration For Students With Autism Spectrum Disorders: The Role Of Teacher Training, Amber Hays '05
Honors Projects
Over twenty years of research has demonstrated that collaborative relationships between parents and teachers are invaluable in enhancing the educational success of all students and are especially meaningful when students have ASD (e.g., Ruble & Dalrymple, 2002). However, collaborative relationships are often difficult to develop because many educators remain uninformed about ASD (Helps, Newsom-Davis, & Callias, 1999) and untrained in working with parents (Lazar & Slostad, 1999). The present study evaluated the ability of an intervention to (a) encourage more positive attitudes toward parent-teacher collaboration, (b) increase general knowledge about ASD, and (c) boost comfort, competence, and confidence levels with …
Ethanol Effects On Reward Value Judgment Following Infusions Into The Amygdala: Implications For Emotional Processing, Stephanie M. Brewer '05
Ethanol Effects On Reward Value Judgment Following Infusions Into The Amygdala: Implications For Emotional Processing, Stephanie M. Brewer '05
Honors Projects
Alcohol, when delivered systemically, leads to impaired performance on a variety of tasks, including emotionally-laden or reward value tasks. It is also known that lesions to the amygdala produce emotional or reward value deficits. However, it is unknown whether the emotional deficits observed after alcohol ingestion are due to alcohol's direct effect on the amygdala. The present study examined the effects of alcohol when infused directly into the amygdala on emotional memory and judgment. Eight male Long-Evans rats were trained on a behavioral task to associate one sweetness level with a reward and another sweetness level with no reward. Once …
Concepts Of Addiction: Assessing The Beliefs Of Addiction In University And Treatment Center Populations, Krystle M. Balhan '05
Concepts Of Addiction: Assessing The Beliefs Of Addiction In University And Treatment Center Populations, Krystle M. Balhan '05
Honors Projects
This study sought to identify differences in the beliefs about addiction between a sample of university students (N=81) and a sample of clients diagnosed with substance abuse or dependence from a drug/alcohol treatment center (N=14). It was hypothesized that treatment center clients would present beliefs that correspond to the disease concept of addiction (Jellinek 1960), while members of the university sample would express more personal or environmental attitudes towards addiction. To assess these potential differences, a survey questionnaire based on the Addiction Belief Inventory (ABI) was administered to both samples (Luke, Ribisl, Walton, and Davidson, 2002). Results of t-tests showed …
An Investigation Of The Influence Of Hope On The Relationship Between Racial Discrimination And Depressive Symptoms Among African American College Students, Jennifer L. Vanderzee '05
An Investigation Of The Influence Of Hope On The Relationship Between Racial Discrimination And Depressive Symptoms Among African American College Students, Jennifer L. Vanderzee '05
Honors Projects
The relationship between perceived racial discrimination, hope, and depressive symptoms among African American college students was investigated. The first supported hypotheses were that racial discrimination, hope, and hope's two components, agency and pathways, would each significantly affect depressive symptoms. Hope and pathways, but not agency, were each found to moderate the relationship between racial discrimination and depressive symptoms and the moderation models were found to explain as much or more variance the models examining direct effects. Also, the interaction of pathways and racial discrimination explained more variance than any of the other models. These results suggest that hope and pathways …