Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Clinical Psychology (443)
- Medicine and Health Sciences (425)
- Social Psychology (372)
- Arts and Humanities (369)
- Sociology (323)
-
- Education (311)
- Cognitive Psychology (305)
- Cognition and Perception (295)
- Life Sciences (289)
- Developmental Psychology (241)
- Counseling Psychology (205)
- Philosophy (190)
- Neuroscience and Neurobiology (184)
- Child Psychology (182)
- Other Psychology (174)
- Business (166)
- Health Psychology (164)
- Industrial and Organizational Psychology (159)
- Mental and Social Health (148)
- Personality and Social Contexts (148)
- Applied Behavior Analysis (146)
- School Psychology (143)
- Ecology and Evolutionary Biology (135)
- Experimental Analysis of Behavior (125)
- Animal Sciences (124)
- Philosophy of Mind (122)
- Cognitive Neuroscience (118)
- Evolution (118)
- Institution
-
- Walden University (164)
- City University of New York (CUNY) (145)
- WellBeing International (145)
- University of Nebraska - Lincoln (115)
- Brigham Young University (113)
-
- Purdue University (98)
- Grand Valley State University (83)
- Embry-Riddle Aeronautical University (78)
- Old Dominion University (77)
- University of South Florida (75)
- University of Kentucky (65)
- University of Central Florida (64)
- University of Nevada, Las Vegas (63)
- Virginia Commonwealth University (60)
- California Institute of Integral Studies (59)
- Marquette University (55)
- Western University (55)
- The University of Southern Mississippi (54)
- Wayne State University (54)
- James Madison University (50)
- Singapore Management University (48)
- Philadelphia College of Osteopathic Medicine (44)
- Antioch University (42)
- Utah State University (42)
- Western Kentucky University (42)
- Western Michigan University (42)
- DePaul University (40)
- Loyola University Chicago (40)
- Nova Southeastern University (40)
- Claremont Colleges (39)
- Keyword
-
- Psychology (215)
- Depression (89)
- Anxiety (54)
- Stress (52)
- Autism (51)
-
- Personality (51)
- Mental health (46)
- Children (44)
- Adolescents (43)
- Female (41)
- Humans (41)
- Adolescent (40)
- College students (39)
- Gender (38)
- Resilience (38)
- Male (37)
- Cognition (36)
- Education (36)
- Emotion (36)
- PTSD (36)
- Trauma (36)
- Attention (34)
- Consciousness (34)
- Parenting (33)
- Alcohol (32)
- Mindfulness (32)
- Stigma (32)
- Motivation (31)
- Memory (30)
- Adolescence (27)
- Publication
-
- Theses and Dissertations (189)
- Walden Dissertations and Doctoral Studies (157)
- Psychology Faculty Publications (136)
- Animal Sentience (127)
- Electronic Theses and Dissertations (104)
-
- Dissertations (84)
- Dissertations, Theses, and Capstone Projects (80)
- Papers from the International Association for Cross-Cultural Psychology Conferences (80)
- Human Factors and Applied Psychology Student Conference (64)
- Faculty Publications (51)
- USF Tampa Graduate Theses and Dissertations (49)
- Journal of Undergraduate Research (47)
- Brain and Mind Institute Researchers' Publications (44)
- PCOM Psychology Dissertations (44)
- Antioch University Dissertations & Theses (42)
- Wayne State University Dissertations (40)
- Dismantling Bias Conference Series (38)
- Master's Theses (38)
- College of Science and Health Theses and Dissertations (37)
- Honors Theses (36)
- International Conference on Gambling & Risk Taking (36)
- Psychology Faculty Research and Publications (36)
- Publications and Research (36)
- Legacy Theses & Dissertations (2009 - 2024) (33)
- Department of Psychology: Faculty Publications (31)
- International Journal of Transpersonal Studies (31)
- Masters Theses & Specialist Projects (30)
- Psychology Theses & Dissertations (30)
- Research Collection School of Social Sciences (30)
- Honors Undergraduate Theses (28)
- Publication Type
- File Type
Articles 2071 - 2100 of 3702
Full-Text Articles in Psychology
Developing A Measure Of Psychological Aggression: Stage 2, Arushi Deshpande, Shanon Sabo, John Delosreyes, Shelia Manning, Miguel A. Padilla
Developing A Measure Of Psychological Aggression: Stage 2, Arushi Deshpande, Shanon Sabo, John Delosreyes, Shelia Manning, Miguel A. Padilla
Undergraduate Research Symposium
Current research indicates that psychological aggression can lead to physical aggression. Thus, accurate measures of psychological aggression can be used to quell future physical aggression. However, unsound psychometric properties and fragmented definitions have diminished the accuracy of current psychological aggression scales. The purpose here is to create a sound psychological aggression scale. This part of the study focused on pilot testing preliminary items written to capture behaviors that constitute psychological aggression. An analysis revealed that some preliminary items required removal because of their abnormal distributions. The next step is to field test the items to establish the factor structure of …
Cognitive Model Of Trust Dynamics Predicts Human Behavior Within And Between Two Games Of Strategic Interaction With Computerized Confederate Agents, Michael G. Collins, Ion Juvina, Kevin A. Gluck
Cognitive Model Of Trust Dynamics Predicts Human Behavior Within And Between Two Games Of Strategic Interaction With Computerized Confederate Agents, Michael G. Collins, Ion Juvina, Kevin A. Gluck
Psychology Faculty Publications
When playing games of strategic interaction, such as iterated Prisoner's Dilemma and iterated Chicken Game, people exhibit specific within-game learning (e.g., learning a game's optimal outcome) as well as transfer of learning between games (e.g., a game's optimal outcome occurring at a higher proportion when played after another game). The reciprocal trust players develop during the first game is thought to mediate transfer of learning effects. Recently, a computational cognitive model using a novel trust mechanism has been shown to account for human behavior in both games, including the transfer between games. We present the results of a study in …
Visual Search Of Mooney Faces, Jessica E. Goold, Ming Meng
Visual Search Of Mooney Faces, Jessica E. Goold, Ming Meng
Dartmouth Scholarship
Faces spontaneously capture attention. However, which special attributes of a face underlie this effect is unclear. To address this question, we investigate how gist information, specific visual properties and differing amounts of experience with faces affect the time required to detect a face. Three visual search experiments were conducted investigating the rapidness of human observers to detect Mooney face images. Mooney images are two-toned, ambiguous images. They were used in order to have stimuli that maintain gist information but limit low-level image properties. Results from the experiments show: (1) Although upright Mooney faces were searched inefficiently, they were detected more …
A Mendelian Randomization Study Of Testosterone And Cognition In Men, Jie Zhao, Tai Hing Lam, Chaoqiang Jiang, Stacey S. Cherny, Bin Liu, Kar Keung Cheng, Weisen Zhang, Gabriel M. Leung, C Mary Schooling
A Mendelian Randomization Study Of Testosterone And Cognition In Men, Jie Zhao, Tai Hing Lam, Chaoqiang Jiang, Stacey S. Cherny, Bin Liu, Kar Keung Cheng, Weisen Zhang, Gabriel M. Leung, C Mary Schooling
Publications and Research
Testosterone replacement for older men is increasingly common, with some observations suggesting a protective effect on cognitive function. We examined the association of endogenous testosterone with cognitive function among older men in a Mendelian randomization study using a separate-sample instrumental variable (SSIV) analysis estimator to minimize confounding and reverse causality. A genetic score predicting testosterone was developed in 289 young Chinese men from Hong Kong, based on selected testosterone-related single nucleotide polymorphisms (rs10046, rs1008805 and rs1256031). The association of genetically predicted testosterone with delayed 10-word recall score and Mini-Mental State Examination (MMSE) score was assessed at baseline and follow-up using …
Relationship Competency: An Exploration Of Training And Relationship Assessment In An Apa Doctoral Program, Jacquelyn M. Rodriguez
Relationship Competency: An Exploration Of Training And Relationship Assessment In An Apa Doctoral Program, Jacquelyn M. Rodriguez
Doctor of Psychology (PsyD)
Relational competency is regarded as foundational to doctoral psychology training (Mangione & Nadkarni, 2010), yet defining this competency has proven to be an arduous and nebulous task. The connection between relationship competency and strong therapeutic alliance, combined with the lack of knowledge and research around effective assessment and training of the nontangible relational attitudes, knowledge, and skills begs for more research on the implementation of this competency. The aim of the current study was to examine the relationship between student therapists’ technique and relational characteristics and therapeutic alliance outcome during 10 therapy sessions. Participants were 24 first year doctoral students …
Displacement, Identity And Belonging For Ibyangin: The Personal Journey Of Transracial Korean-Born Adoptees, Jason D. Reynolds, Joseph G. Ponterotto, Christina Lecker
Displacement, Identity And Belonging For Ibyangin: The Personal Journey Of Transracial Korean-Born Adoptees, Jason D. Reynolds, Joseph G. Ponterotto, Christina Lecker
The Qualitative Report
The present study examined the lived experience (erlebnis) of adult transracial, Korean-born adoptees (Ibyangin; Yngvesson & Coutin, 2006) raised in the United States by White families. Long interviews (McCracken, 1988) were conducted with fourteen young adult (age 26-30) Korean-born adoptees in-person or by phone. The study was anchored in the constructivist-interpretivist research paradigm (Ponterotto, 2005) and utilized the phenomenological inquiry model (Moustakas, 1994) to explore the essence of the international transracial adoption experience. Two major clusters of meaning with additional subthemes were related to a) identity development, and b) decision to return to Korea. Limitations of the study are reviewed, …
Dealing With Student Anxiety, Diane Suffridge
Dealing With Student Anxiety, Diane Suffridge
Collected Faculty Scholarship
A presentation on how university faculty can recognize and deal with student anxiety.
Alcohol And Nicotine Co-Dependence, Taylor Woodward, Scott Steffensen
Alcohol And Nicotine Co-Dependence, Taylor Woodward, Scott Steffensen
Journal of Undergraduate Research
Addiction is a diabolical neurochemical trap that robs people of their agency and catastrophically affects virtually every aspect of an addict’s life. Alcohol is one of the most statistically widespread and harmful addictive substances in our society (Nutt, King et al. 2010). Through physiological means, it destroys an addict’s dignity, disrupts the ability to maintain healthy relationships, and often results in premature death of the addict and those around him or her. M. Russell Ballard recently spoke about the spiritual implications of the pleasure center of the brain, stating that “when activated by certain drugs or behaviors, it overpowers the …
Off The Lip Conference - Transdisciplinary Approaches To Cognitive Innovation. Conference Proceedings, Sue Denham, Michael Punt, Edith Doove, Martha Blassnigg, Raluca Briazu, Kathryn Francis, Agi Haynes, Guy Edmonds, Adam Benjamin, Matthew Emmett, Iris Garrelfs, Christopher B. Germann, Joanna Griffin, Diane Humphrey, Bryanna Lucyk, Christie Purchase, Rachel Sansone, Emily Baxter, Amy Ione, Frank Loesche, Abigail Jackson, Alexis Kirke, Eduardo Miranda, Luke Rendell, Simon Ingram, Yutaka Nakamura, Gi Taek Ryoo, Eugenia Stamboliev, Michael Straeubig, Chun-Wei Hsu, Pinar Oztop, Mihaela Taranu, Sundar Sarukkai, James Sweeting, Minami Hirayama
Off The Lip Conference - Transdisciplinary Approaches To Cognitive Innovation. Conference Proceedings, Sue Denham, Michael Punt, Edith Doove, Martha Blassnigg, Raluca Briazu, Kathryn Francis, Agi Haynes, Guy Edmonds, Adam Benjamin, Matthew Emmett, Iris Garrelfs, Christopher B. Germann, Joanna Griffin, Diane Humphrey, Bryanna Lucyk, Christie Purchase, Rachel Sansone, Emily Baxter, Amy Ione, Frank Loesche, Abigail Jackson, Alexis Kirke, Eduardo Miranda, Luke Rendell, Simon Ingram, Yutaka Nakamura, Gi Taek Ryoo, Eugenia Stamboliev, Michael Straeubig, Chun-Wei Hsu, Pinar Oztop, Mihaela Taranu, Sundar Sarukkai, James Sweeting, Minami Hirayama
Off the Lip Conference - Transdisciplinary Approaches to Cognitive Innovation
The promise of cognitive innovation as a collaborative project in the sciences, arts and humanities is that we can approach creativity as a bootstrapping cognitive process in which the energies that shape the poem are necessarily indistinguishable from those that shape the poet. For the purposes of this conference the exploration of the idea of cognitive innovation concerns an understanding of creativity that is not exclusively concerned with conscious human thought and action but also as intrinsic to our cognitive development. As a consequence, we see the possibility for cognitive innovation to provide a theoretical and practical platform from which …
The Efficacy Of Neurofeedback Training In Enhancing High-Order Processing In Addicts, Ian Armstrong, Scott C. Steffensen
The Efficacy Of Neurofeedback Training In Enhancing High-Order Processing In Addicts, Ian Armstrong, Scott C. Steffensen
Journal of Undergraduate Research
Biofeedback is a process by which a person learns to control physiological functions of their body that they would otherwise not be conscously aware of. This is accomplished by relaying real-time information back to the user in the form of data or a game. The user then modifies their physiological activity in order to achieve set goals through a process of operant conditioning. Neurofeedback is a form of biofeedback that utilizes EEG monitoring to collect a person’s electrical brainwave activity and display it back to them. In this experiment, the method in which that feedback is displayed to the subject …
Identification Of Location And Timing Of Ros Production In Response To Meth Exposure, Andrew Lamprecht, Scott Steffensen
Identification Of Location And Timing Of Ros Production In Response To Meth Exposure, Andrew Lamprecht, Scott Steffensen
Journal of Undergraduate Research
Methamphetamine is an extremely addictive drug that acts on the pleasure center of the brain. It causes an increase in the release of dopamine (DA) into the synaptic cleft. This rapid release of DA causes the “rush” felt by drug users. It also causes severe malfunctions in the brain such as anxiety, mood disorders, increased violence, reduced motor skills, impaired verbal learning, and psychosis. Among other things, the cause for these harmful effects could be related to Reactive Oxygen Species (ROS) and their resulting oxidative damage. Oxidative damage has been suggested to constitute early signaling events in programmed cell death, …
Measuring Metamphetamine’S Effects On Dopamine Production During Exposure To Glutathione, Eli Schriever, Scott Steffensen
Measuring Metamphetamine’S Effects On Dopamine Production During Exposure To Glutathione, Eli Schriever, Scott Steffensen
Journal of Undergraduate Research
One of the primary focuses of much addiction research involves finding methods to alleviate methamphetamine (METH) addiction. METH is one of the most widely used illicit drugs in the United States. Estimates by the National Institute on Drug Abuse Statistics are that 5.5% of all adults ages 26 and above have at tried METH at least one time. Given its high addictive potential, the chance for entering damaging addiction cycles among these individuals is very high, and can have great societal and economic consequences in addition to physical and mental problems on the individual level. While the need for better …
Gene X Environment Interactions In Rhesus Macaques: A Test Of The Orchid-¬‐Dandelion Hypothesis, S. Andrew Aston, J. Dee Higley
Gene X Environment Interactions In Rhesus Macaques: A Test Of The Orchid-¬‐Dandelion Hypothesis, S. Andrew Aston, J. Dee Higley
Journal of Undergraduate Research
Aston, S. Andrew Gene x Environment Interactions in Rhesus Macaques: A test of the Orchid-‐Dandelion Hypothesis Faculty Mentor: J. Dee Higley, Department of Psychology Numerous studies have shown that certain gene variants produce distinct phenotypes based on the environment in which an individual develops. Many of these so called gene-‐by-‐environment (GxE) interactions lead to an increased risk of developing psychopathology. The Orchid-‐ Dandelion Hypothesis posits that risk alleles have been conserved to the present day, suggesting that although risk alleles may prove deleterious in many environments, under the right conditions, such variants may bestow an evolutionary advantage. For my ORCA …
Don't Be Afraid Of Failure, Michael Bass
Don't Be Afraid Of Failure, Michael Bass
UCF Forum
Many people have written on the fear of failure. In many places it goes under the heading “fear of losing face.” I have visited several major laboratories and universities in Japan and China and come away with an uncanny feeling that in many instances they are held back by this fear.
Role Of Reactive Oxygen Species On Chronic Methamphetamine- Induced Dopamine Transmission In The Nucleus Accumbens, Devin Bradshaw, Scott Steffensen
Role Of Reactive Oxygen Species On Chronic Methamphetamine- Induced Dopamine Transmission In The Nucleus Accumbens, Devin Bradshaw, Scott Steffensen
Journal of Undergraduate Research
Methamphetamine is a highly addictive substance with many negative effects on the user. These effects include detriments to physical health such as “…extreme weight loss, severe dental problems (“meth mouth”), and skin sores caused by scratching. Methamphetamine use also raises the risk of contracting infectious diseases like HIV and hepatitis B and C.” (“DrugFacts: Methamphetamine”, 2014). Negative health effects like this come from long term abuse of methamphetamine due to addiction to the substance. Reducing the cause of the addictive behavior (dopamine (DA) overstimulation causing neuronal damage) can help to prevent these negative effects of METH abuse. As the effects …
Effect Of Methamphetamine On Basal And Phasic Dopamine Release In The Striatum, Krisana Finlay, Scott Steffensen
Effect Of Methamphetamine On Basal And Phasic Dopamine Release In The Striatum, Krisana Finlay, Scott Steffensen
Journal of Undergraduate Research
The purpose of this experiment was to determine the action mechanism of the psychostimulant methamphetamine (METH) on basal and phasic dopamine (DA) release in the nucleus accumbens. We investigated METH and its method of action. This was done to better understand the detailed mechanism behind METH and to provide better addiction-solving tools. Previous METH research provided a great starting point, showing a reduction in DA transmission and tyrosine hydroxylase, and increased DA axon and terminal damage, apoptosis (cell death) and axon degeneration.
Marital Satisfaction, Error-Observation, And The Brain: Harmful Or Beneficial Effects Of Spouse Observation?, Chelsea Romney, Michael Larson
Marital Satisfaction, Error-Observation, And The Brain: Harmful Or Beneficial Effects Of Spouse Observation?, Chelsea Romney, Michael Larson
Journal of Undergraduate Research
Romney, Chelsea Marital Satisfaction, Error-observation, and the Brain: Harmful or Beneficial Effects of Spouse Observation? Faculty Mentor: Larson, Michael, Department of Psychology and Neuroscience Introduction Rewarding marital relationships are associated with many positive outcomes in one’s physical and mental health (Robles, & Kiecolt-Glaser, 2003). These benefits include improved cardiovascular functioning (Kiecolt-Glaser, & Newton, 2001), decreased depression risk (Robins & Reiger, 1991), higher self-reported levels of happiness (Proulx & Snyder-Rivas, 2013), and overall lower rates of mortality (Manzoli, Villari, Pirone & Boccia, 2007). Furthermore, positive health outcomes are not only due to marital status, but also to the quality of one’s …
Receiving Reward’S Effect On Ego-Depletion, Travis Johnson, Michael J. Larson, Phd
Receiving Reward’S Effect On Ego-Depletion, Travis Johnson, Michael J. Larson, Phd
Journal of Undergraduate Research
Recent research suggests that willpower–the capacity to exert self-control–is a limited resource that is depleted after exertion (Job, Dweck & Walton, 2010). We aimed to explore the influence of ego-depletion on how we process rewards and punishment. Ego depletion specifically refers to the idea that self-control or willpower draws upon a limited pool of mental resources that can be used up (i.e., depleted) after cognitive exertion. For example, an experiment performed by Kathleen Vohs and Todd Heatherton (2000) demonstrated how ego depletion was relevant in how it affected chronic dieters compared to non-dieters. Their results showed that dieters, in responding …
Mind-Full Love, Bruce Vermeer
Mind-Full Love, Bruce Vermeer
Faculty Work Comprehensive List
"Developing and maintaining cognitive fitness is a lifelong process that, not unlike physical fitness, requires considerable self-discipline at every age."
Posting about loving and honoring God with our minds from In All Things - an online hub committed to the claim that the life, death, and resurrection of Jesus Christ has implications for the entire world.
http://inallthings.org/mind-full-love/
Electrophysiological Testing Of Iterhemispheric Transfer In Individuals With Mild Traumatic Brain Injury, Nathan Alder, Michael J. Larson, Phd
Electrophysiological Testing Of Iterhemispheric Transfer In Individuals With Mild Traumatic Brain Injury, Nathan Alder, Michael J. Larson, Phd
Journal of Undergraduate Research
A key issue in mild traumatic brain injury (TBI; also known as concussion) research is the identification and validation of a cost-effective, physiological measure that accurately identifies individuals who have experienced a mild TBI, is robust against motivation difficulties, and aids in the prediction of which individuals will experience persisting cognitive or emotional side effects. Nearly two million cases of TBI occur each year (Langlois, Rutland-Brown, & Thomas, 2004). Mild TBI is considered a major health concern (Ragnarsson, 2002) and can be associated with some long-term functional deficits including memory decline and decreased job satisfaction (Carroll et al., 2004; Iverson, …
Cognitive Control And Obsessive-Compulsive Disorder, Katherine Slinn, Michael Larson
Cognitive Control And Obsessive-Compulsive Disorder, Katherine Slinn, Michael Larson
Journal of Undergraduate Research
This project was an in-depth statistical analysis of previously collected data in order to explore the hypothesis that obsessive-compulsive disorder (OCD) is associated with a decrease in the ability to regulate behavior and to apply top-down cognitive control. OCD has been diagnosed in approximately 2.2 million Americans, typically appearing in early adulthood. Approximately half of these cases show severe functional impairment (Kessler, Chiu, Demler, & Walters, 2005). Obsessions are defined as unwanted and recurrent thoughts or impulses, and compulsions are repetitive behaviors that are driven by these obsessions, such as ordering or counting (American Psychiatric Association, 2013). 20% to 30% …
Electrophysiological Testing Of Iterhemispheric Transfer In Individuals With Mild Traumatic Brain Injury, Nathan Alder, Michael J. Larson
Electrophysiological Testing Of Iterhemispheric Transfer In Individuals With Mild Traumatic Brain Injury, Nathan Alder, Michael J. Larson
Journal of Undergraduate Research
A key issue in mild traumatic brain injury (TBI; also known as concussion) research is the identification and validation of a cost-effective, physiological measure that accurately identifies individuals who have experienced a mild TBI, is robust against motivation difficulties, and aids in the prediction of which individuals will experience persisting cognitive or emotional side effects. Nearly two million cases of TBI occur each year (Langlois, Rutland-Brown, & Thomas, 2004). Mild TBI is considered a major health concern (Ragnarsson, 2002) and can be associated with some long-term functional deficits including memory decline and decreased job satisfaction (Carroll et al., 2004; Iverson, …
Cognitive Control And Obsessive-Compulsive Disorder, Katherine Slinn, Michael Larson
Cognitive Control And Obsessive-Compulsive Disorder, Katherine Slinn, Michael Larson
Journal of Undergraduate Research
This project was an in-depth statistical analysis of previously collected data in order to explore the hypothesis that obsessive-compulsive disorder (OCD) is associated with a decrease in the ability to regulate behavior and to apply top-down cognitive control. OCD has been diagnosed in approximately 2.2 million Americans, typically appearing in early adulthood. Approximately half of these cases show severe functional impairment (Kessler, Chiu, Demler, & Walters, 2005). Obsessions are defined as unwanted and recurrent thoughts or impulses, and compulsions are repetitive behaviors that are driven by these obsessions, such as ordering or counting (American Psychiatric Association, 2013). 20% to 30% …
Marital Satisfaction, Error-Observation, And The Brain: Harmful Or Beneficial Effects Of Spouse Observation?, Chelsea Romney, Michael Larson
Marital Satisfaction, Error-Observation, And The Brain: Harmful Or Beneficial Effects Of Spouse Observation?, Chelsea Romney, Michael Larson
Journal of Undergraduate Research
Romney, Chelsea Marital Satisfaction, Error-observation, and the Brain: Harmful or Beneficial Effects of Spouse Observation? Faculty Mentor: Larson, Michael, Department of Psychology and Neuroscience Introduction Rewarding marital relationships are associated with many positive outcomes in one’s physical and mental health (Robles, & Kiecolt-Glaser, 2003). These benefits include improved cardiovascular functioning (Kiecolt-Glaser, & Newton, 2001), decreased depression risk (Robins & Reiger, 1991), higher self-reported levels of happiness (Proulx & Snyder-Rivas, 2013), and overall lower rates of mortality (Manzoli, Villari, Pirone & Boccia, 2007). Furthermore, positive health outcomes are not only due to marital status, but also to the quality of one’s …
Receiving Reward’S Effect On Ego-Depletion, Travis Johnson, Michael J. Larson, Phd
Receiving Reward’S Effect On Ego-Depletion, Travis Johnson, Michael J. Larson, Phd
Journal of Undergraduate Research
Recent research suggests that willpower–the capacity to exert self-control–is a limited resource that is depleted after exertion (Job, Dweck & Walton, 2010). We aimed to explore the influence of ego-depletion on how we process rewards and punishment. Ego depletion specifically refers to the idea that self-control or willpower draws upon a limited pool of mental resources that can be used up (i.e., depleted) after cognitive exertion. For example, an experiment performed by Kathleen Vohs and Todd Heatherton (2000) demonstrated how ego depletion was relevant in how it affected chronic dieters compared to non-dieters. Their results showed that dieters, in responding …
Impact Of Major Depressive Disorder On Memory Specificity And Resting-State Fmri, Kayla Alder, Dr. Brock Kirwan
Impact Of Major Depressive Disorder On Memory Specificity And Resting-State Fmri, Kayla Alder, Dr. Brock Kirwan
Journal of Undergraduate Research
Previous research suggests that those with depression have altered brain structures compared to control participants. For example, depressed individuals have smaller hippocampal volumes than those not diagnosed with Major Depressive Disorder (MDD) (Brown, Rush & McEwen, 1999). The hippocampus plays a major role in memory, especially by storing different stimuli as separate and distinct memories in the brain (Yassa & Stark, 2011). This process of storing the stimuli separately correctly is known as pattern separation (PS). Depressed individuals also have reduced neurogenesis (the birth and growth of new neurons in adulthood) in the hippocampus compared to controls. Those diagnosed with …
Effects Of Exercise On Food-Related Cognition, Tyshae Davis, Michael J. Larson
Effects Of Exercise On Food-Related Cognition, Tyshae Davis, Michael J. Larson
Journal of Undergraduate Research
Since the Yerkes-Dodson theory was initially put forward (as early as 1906), multiple theorists have suggested an inverted-U relationship between physiological arousal and cognitive performance. Literature on this topic, however, is mixed, with some studies showing evidence supporting the inverted-U relationship and others showing a more linear relationship. Exercise and food-related cognition is one area where the inverted-U hypothesis could be applied. Some studies have shown that high-intensity exercise induces an acute, but temporary suppression to hunger and energy intake compared to low-intensity exercise (King, Tremblay, & Blundell, 1997) and that high-intensity exercise favors negative energy balance to a greater …
Polymorphisms Of The Glucocorticoid Receptor Gene And The Association With Stress, Randall Beck, Michael J. Larson
Polymorphisms Of The Glucocorticoid Receptor Gene And The Association With Stress, Randall Beck, Michael J. Larson
Journal of Undergraduate Research
Polymorphisms in the GR gene are an interesting and important area of research as these polymorphisms may be associated with an attenuated ability to cope with stress. This project bridged an unexplored gap between cellular and environmental stress and the expression of the GR gene—specifically the Bcl1 polymorphism of the GR gene. Cellular stress is any damage caused to the cell that alters its ability to function properly (Milisav, 2011). The Bcl1 polymorphism has what are known as C and G alleles that are genotyped as either homozygous GG, homozygous CC, or heterozygous CG (Srivastava et al., 2011). The homozygous …
Reconstructing Representations Of Dynamic Visual Objects In Early Visual Cortex, Edmund Chong, Ariana M. Familiar, Won Mok Shim
Reconstructing Representations Of Dynamic Visual Objects In Early Visual Cortex, Edmund Chong, Ariana M. Familiar, Won Mok Shim
Dartmouth Scholarship
As raw sensory data are partial, our visual system extensively fills in missing details, creating enriched percepts based on incomplete bottom-up information. Despite evidence for internally generated representations at early stages of cortical processing, it is not known whether these representations include missing information of dynamically transforming objects. Long-range apparent motion (AM) provides a unique test case because objects in AM can undergo changes both in position and in features. Using fMRI and encoding methods, we found that the “intermediate” orientation of an apparently rotating grating, never presented in the retinal input but interpolated during AM, is reconstructed in population-level, …
The Effects Of Chronic Ethanol In Δ Knockout Mice, Zachary Gardner, Scott Steffensen
The Effects Of Chronic Ethanol In Δ Knockout Mice, Zachary Gardner, Scott Steffensen
Journal of Undergraduate Research
Substance abuse is a prolific problem with serious consequences. Specifically, alcohol abuse is the third leading cause of preventable mortality in the world (Mokdad et al., 2004). Each year the far-reaching effects of alcohol abuse cost the United States several hundred billion dollars annually (Office of National Policy, 2004). Treatment for individuals who suffer from this crippling disease is limited. In order to develop effective treatments we need to know more about the mechanisms of addiction and the changes that occur in the brain as a person becomes addicted.