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- Creator:
- Pastor, Ivylynn Amanda
- Description:
- Head direction (HD) cells and theta oscillations are thought to be part of a network mediating navigational behavior. Intraseptal infusions of muscimol eliminates theta and produces navigational deficits. The present investigation sought to characterize the effects of septal inactivation using muscimol on (1) the basic directional characteristics of HD cells, (2) the control of the HD cell network by visual landmarks, and (3) the maintenance of a stable preferred direction (PD) using idiothetic cues in darkness. Blockade of theta by medial septal infusions of muscimol produced a population of HD cells with PDs that shifted unpredictably between sessions, suggesting that landmark control was affected. Further, a significant population of HD cells was unable to maintain stable PDs when the animals locomoted in the dark, suggesting that idiothetic cue processing was affected. These findings suggest that theta oscillations are necessary for the directional stability of HD cells in anterodorsal thalamus.
- Resource Type:
- Thesis
- Campus Tesim:
- Sacramento
- Department:
- Psychology
- Creator:
- Lim, Stephanie
- Description:
- The aim of the present study was to examine the mediating roles of emotion dysregulation and cognitive and behavioral avoidance in the relationship between childhood maltreatment and psychological distress. A total of 305 participants from a large public university volunteered to participate in exchange for course credit. Tests for mediation revealed that emotion dysregulation and cognitive and behavioral avoidance partially mediated the effect of childhood emotional maltreatment on psychological distress. When examined in separate analyses, 65% of the effect of maltreatment on distress is mediated through emotion dysregulation, while 39% of the effect is mediated through cognitive and behavioral avoidance. Given previous findings linking maltreatment to an increased risk for problematic emotional functioning, additional work on how to enhance resilience by improving emotion regulation skills and reducing avoidant behaviors among at-risk children and young adults is needed.
- Resource Type:
- Thesis
- Campus Tesim:
- Sacramento
- Department:
- Psychology
- Creator:
- Elliott, Robert T.
- Description:
- It is the purpose of this study to determine the reaction to frustration of a group of mentally retarded children, as measured by the Rosenzweig Picture Frustration Study. Following are two hypothesis which the writer poses in regards to the reaction to frustration of mentally retarded children. Hypothesis I: Mentally retarded children will react to frustration in a significantly more extropunitive, ego-defensive manner than a normal population of comparable age and socio-economic background, as measured by the Rosenzweig Picture Frustration Study. The null hypothesis to be tested is that mentally retarded children will not differ significantly from a comparable normal population, on a dimension of Extropunitiveness as measured by the P.F. Study. Hypothesis II: The mentally retarded children's reaction to frustration will not only be significantly more extropunitive, ego-defensive than a normal group; but the M.R. group's extropunitive reaction to frustration will increase with age of the subject rather than decrease, as measured by the P.F. Study. The null hypothesis to be tested is that mentally retarded children will not increase in their amount of extropunitive reaction to frustration with age, but will be comparable to a normal group in reactions.
- Resource Type:
- Thesis
- Campus Tesim:
- Sacramento
- Department:
- Psychology
- Creator:
- Steinwert, Matthew L.
- Description:
- The study expanded upon a previously proposed model of the relationship between self-oriented and socially prescribed perfectionism to motivation and academic outcomes by introducing psychological well-being as both dependent on perfectionism and a predictor of academic outcomes. The study consisted of 301 American college students. Self-oriented perfectionism related positively to self-efficacy, well-being, performance avoidance and performance approach goal orientations while socially prescribed perfectionism related positively to mastery goal orientation but negatively with self-efficacy, well-being and performance avoidance goal orientation. Higher levels of mastery goal orientation related to higher levels of procrastination and test anxiety and lower levels of acceptance towards cheating. Higher levels of performance avoidance were positively related to acceptance towards cheating but negatively towards test anxiety. Both self-efficacy and well-being were negatively related to procrastination. Self-oriented perfectionism is found to be more adaptive than socially prescribed perfectionism due to increased self-efficacy and well-being and lower test anxiety.
- Resource Type:
- Thesis
- Campus Tesim:
- Sacramento
- Department:
- Psychology