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 31 for “"reward sensitivity"”.
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Association between Reward Sensitivity and Smoking Status in Major Depressive Disorder
Chronic nicotine use has been linked to increased sensitivity to nondrug rewards as well as improvement in mood among individuals with depression, and these effects have been hypothesized to be mediated through alternations in striatal dopamine activity. Similarly, chronic nicotine use is …
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Impulsivity and Reward Sensitivity: Attentional and Emotional Factors Underlying Stimulus-Reward Learning
Increased impulsivity and alterations in reward sensitivity co-occur in many psychiatric disorders. Moreover, individuals reporting more impulsive traits are less efficient in learning stimulus-reward associations. This suggests that impulsivity and reward sensitivity may be linked, consistent with …
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Characterization of Reward Sensitivity, Positive Affect and Working Memory in Socially Anxious Young Adults
… models have suggested that diminished sensitivity to reward may be a specific factor related to low positive affect (PA) and by extension social anxiety, yet no research has systematically examined this relationship. Additionally, working memory has been found to activate dopamine …
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The Effects of Anxiety and Reward Sensitivity on the Interplay Between Emotion and Reward Processing
This study investigated the interplay between reward and emotion processing and examines the influence of individual differences, specifically anxiety and reward sensitivity, on these cognitive processes. Using a within-subjects design, 50 university students completed three associative matching …
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The Development of Reward Sensitivity- Exploring the Role of Culture and Parental Education on Adolescent Development
… in the degree to which behaviors are driven by reward-seeking. However, there are individual differences in the extent to which adolescents respond to rewards. One individual difference may arise from the socioeconomic context in which youth develop. Life-history (LH) theory suggests that …
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Heritable variation in reward sensitivity and impulsive cction and choice in a genetically diverse inbred mouse panel
… animal models and human subjects points towards reward sensitivity and impulsivity as being characteristics that predict greater positive subjective responses to stimulant drugs. The Collaborative Cross (CC) recombinant inbred mouse strains and their inbred founders are a powerful genetic …
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Individual Differences in the Dopaminergic Reward System: The Effect of Genetic Risk on Neural Reward Sensitivity and Risky Choice
… their choice; however, some display heightened reward sensitivity, despite the potential for future negative consequences, which can lead one to make risky choices. Rewards are processed in the mesolimbic dopamine reward system, and this system is in part modulated by genetic polymorphisms that …
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Pleasant Affect and Sociability: Towards a Comprehensive Model of Extraverted Feelings and Behaviors
… trait are linked to an underlying reward-sensitivity system that controls pleasant emotional responses and approach behavior. In the current paper, I trace the history of the extraversion dimension and show how reward-sensitivity theories have developed and how they relate to other …
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ELECTROCORTICAL CHANGES FOLLOWING ATTENTION BIAS MODIFICATION IN A SAMPLE OF HIGH-BIPOLAR TRAIT INDIVIDUALS
… that enhanced dopaminergic activity within reward-mediated pathways in the brain underlies these behaviors. Recent research has identified a link between an attentional bias to rewarding feedback and reward sensitivity. Due to this connection, the objective of this study was to investigate …
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Differentiation between the Effects of Physical and Psychosocial Stress on a Feedback-based Learning Task
… in stress reactivity may be associated with reward sensitivity. Therefore, the present study investigated the effects of psychosocial and physical stress on feedback-based learning. The relationship between stress reactivity and reward sensitivity was also examined. Ninety-two college-aged …
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The Influence of Neural Reward Processing on Memory in Depression
… suggest that depression involves impaired reward sensitivity and a deficit in memory for rewarding stimuli. Some researchers propose that this memory deficit may result from reduced neural reward sensitivity, which impairs the encoding of reward-related memories, but few studies have …
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Resting-State Functional Brain Networks in Bipolar Spectrum Disorder: A Graph Theoretical Investigation
… high risk for BSD based on moderate versus high reward sensitivity, both with and without a BSD diagnosis, using graph theoretical network analysis. Results demonstrated decreased connectivity in a cognitive control region (dorsolateral prefrontal cortex), but increased connectivity of a brain …
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Neural and Behavioral Evidence for a Link Between Mobile Technology Usage and Intertemporal Preference
… intertemporal preference, impulse control, and reward sensitivity, are predictive of the degree to which people engage with their smartphones, in two separate experiments. Experiment 1 utilized behavioral and self-reported measures for each of the aforementioned cognitive traits to examine their …
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Problematic Social Media Use’s Association with Social Anxiety and Neural Responsiveness to Reward from Social Media Feedback
… Social media increases activity in the brain's reward centers. A common measure of the neural correlates of reward is the event-related potential, reward positivity (RewP) in EEG. Heightened RewP is associated with greater social anxiety. Problematic social media use is also associated with …
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Stress and Reward Function in Concurrent Depression and Chronic Cannabis Use
… in the regulation of stress responses and reward processing underlying anhedonia, which may be putative processes through which depression outcomes are worsened with chronic cannabis use. This investigation utilized a prospective design to examine differences in depression, functioning, …
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Behavioral Training of Reward Learning Increases Reinforcement Learning Parameters and Decreases Depression Symptoms Across Repeated Sessions
Background: Disrupted reward learning has been suggested to contribute to the etiology and maintenance of depression. If deficits in reward learning are core to depression, we would expect that improving reward learning would decrease depression symptoms across time. Whereas previous studies have …
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Reinforcement learning algorithms to model learning and decision-making in individuals with depressive disorders
… argue that key parameters like learning rate and reward sensitivity are closely linked to depressive symptoms. Finally, I speculate about the impact that knowledge of this kind may have on the development of better diagnosis and treatment for mental illness in general and depression specifically.
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The Role of Impulsivity and Reward Reactivity in Gray's Behavioral Activation System: Self-Reported Behavior and Autonomic Response to Reward
… a central role in approach motivation and reward sensitivity (Gray, 1970). Self-report measures of BAS (e.g., Carver & White, 1994) have been used to index BAS activity, with higher scores interpreted as indicating greater BAS activity (e.g., Hundt et al., 2008). However, Beauchaine and …
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A Window Into Autonomic Nervous System Functioning in Autism: Pupillometry in Adults on the Autism Spectrum
… and differences in attentional control or reward sensitivity, in autism are discussed. Results also suggest that certain features of autism as well as depression and anxiety seem to co-vary with differences in certain pupillometry measure—especially in the context of increased cognitive …
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THE INFLUENCE OF INDIVIDUAL DIFFERENCES ON THE IOWA GAMBLING TASK AND REAL-WORLD DECISION MAKING
… rational, non-impulsive decision-making while reward sensitivity accounted for lower scores on the two measures. Negatively valenced emotions predicted poor decision outcomes on the DOI but were not associated with IGT performance. Implications of the results are discussed in regards to the use …
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