Digital Commons Network^™

Education In Rural Mexico: What Stops Students?, Jared A. Wilkerson, Dr. Harold Miller

Journal of Undergraduate Research

Providing regular education in rural Mexico has been a focus for the Mexican government for the last few decades. Even twenty years ago, many teachers were quite unwilling to visit rural areas, where the facilities and transportation were far under par. By the beginning of this decade, however, kindergarten and elementary schools had reached even the most remote parts of the country, with middle schools and high schools increasingly accessible to all potential students. Seeing the still-low rates of rural student matriculation, and especially noting the extremely low rates of male education, I wondered what inhibited youth from finishing, or …

The Effects Of Anesthesia On Midbrain Gaba Neurons, Stuart Layton, Dr. Scott Steffensen

Journal of Undergraduate Research

Consciousness has perplexed neuroscientists for decades. What is consciousness and how is it obstructed by anesthesia? Every year doctors expose thousands of people to general anesthesia. Anesthesia does several things, it prevents the perception of pain, renders a patient unconscious, inhibits the formation of memory, and paralyzes the subject; all of which as desired during a medical procedure. The mechanism by which anesthesia accomplishes these many tasks are unknown, including its ability to render a subject unconscious. The goal of this study was to study the effects of anesthesia on -aminobutyric acid (GABA) neurons in the ventral tegmental area (VTA) …

Does Monitor Peptide Produce Anorexia Through The Release Of Endogenous Cholecystokinin?, Cory A. Talbot, Dr. Gregory N. Ervin

Journal of Undergraduate Research

Cholecystokinin (CCK) is a gut hormone released following the ingestion of a meal. It was first shown in 1973 by Gibbs et al. that administration of exogenous CCK-8 (CCK-8 is the smallest part of the CCK molecule that possesses its biological activity) before a meal leads to a decrease in food intake and the onset of satiety-like behaviors in rats.1 Extensive evidence now exists demonstrating that exogenous CCK-8 can produce a selective decrease in food intakes in humans, as well. By using CCK receptor antagonists to block endogenous CCK or trypsin inhibitors to elevate released endogenous CCK, some evidence is …

Test Order Effects In Simultaneous Protocols, Abdulrazaq Imam, Timothy A. Warner

Psychology

Simultaneous protocols typically yield poorer stimulus equivalence outcomes than do other protocols commonly used in equivalence research. Two independent groups of three 3-member equivalence sets of stimuli were used in conditional discrimination procedures in two conditions, one using the standard simultaneous protocol and the other using a hybrid simultaneous training and simple-to-complex testing. Participants completed the two conditions in one long session in Experiment 1, but in separate sessions in Experiment 2. The same stimulus sets used in Experiment 1 were randomized for the two conditions in Experiment 2. Overall, accuracy was better with the hybrid than with the standard …

What A Girl Wants: Female Mate Selection In Terms Of Monetary Resources And Number Of Children, Stefanit Tucker

Modern Psychological Studies

Several evolutionary theories provide the framework for assessing modern mate selection. Previous research in female mate selection has left a gap in whether and how number of children a male has can impact the perception of monetary resources he possesses and subsequently his desirability as a mate. The present investigation thus set out to examine resource-related differences among males with average ($50,001-75,000) and above average incomes (>$150,000) by analyzing data available through the online dating website, match.com. Furthermore, the geographic locations of New York, New York and Louisville, Kentucky were used to both refine results but also maintain genera …

Neuropsychological Correlates Of Anosognosia In Mci And Dementia, Krystle Dina Barrera

Loma Linda University Electronic Theses, Dissertations & Projects

Anosognosia is a general term used to describe a lack of awareness of a disability and is well documented in various disorders associated with neurological compromise. While anosognosia is well documented as part and parcel to Alzheimer's dementia, less research has focused on determining the presence of anosognosia in what has come to be viewed as the subclinical precursor to dementia, mild cognitive impairment. In addition, a number of different methodologies and instruments are employed in quantifying and assessing anosognosia in various populations, which make comparison across studies and diagnoses difficult. Research commonly employs a paradigm that uses the discrepancy …

Cerebral Metabolic And Neuropsychological Outcomes Following Mild Traumatic Brain Injury, Julia L. Evans

Loma Linda University Electronic Theses, Dissertations & Projects

Traumatic brain injury (TBI) in adolescents and adults can result in cognitive, emotional, behavioral and neurological deficits that can persist more than a year after an injury. The current preliminary study used 3D magnetic resonance spectroscopic imaging (MRSI) and comprehensive neuropsychological assessment to determine if prolonged cerebral metabolic and cognitive alterations occur in individuals with persistent neurocognitive deficits following a mild TBI (mTBI). The current study evaluated the potential interactions between cerebral metabolism and neuropsychological performance, coping style, mood, and perceived quality of life in mTBI subjects with chronic post-concussive symptoms. The mTBI subjects performed worse than controls on neuropsychological …

Psychometrically Valid Relationships Between Acculturation And Neuropsychological Factors, Eunice E. Kwon

Loma Linda University Electronic Theses, Dissertations & Projects

Neuropsychological tests play a significant role in detecting brain dysfunction and treatment planning for patients. However, discrepancies in neurocognitive tests among ethnic minorities continue to perplex neuropsychologists and place ethnic minorities at a greater risk for misdiagnoses (Byrd et al., 2006). The aim of this study was to ascertain significant acculturation predictors influencing neuropsychological performance in ethnic minorities, particularly verbally mediated tasks which were known to be more susceptible to discrepancies in acculturation level were examined (Razani et al., 2007). Healthy participants from Hispanic (n = 52), Asian (n = 52), and Middle-Eastern (ME; n = 68) descents between the …

Meta-Analysis Of Rodent Behavior In Various Brain Injury And Disease Models, Earl C. Thorndyke Iii

Loma Linda University Electronic Theses, Dissertations & Projects

The objective of this study was to identify patterns and profiles present in rodent behavioral assay data to inform methodology of future animal research. Domains of spatial learning, motor function, activity, and emotionality were examined. This study first identified how rodent performance on commonly used behavioral and neurocognitive assays varies by species, sex, and age. Significant differences were observed in spatial learning curves, patterns of motor function, emotionality and activity in rats and mice. Overall, males and females had similar performances on spatial learning and motor function, but sex and species interactions were also observed, indicating varied sex differences in …

Sensory-Specific Appetition: Postingestive Detection Of Glucose Rapidly Promotes Continued Consumption Of A Recently Encountered Flavor, Kevin P. Myers, Marisa S. Taddeo, Emily K. Richards

Faculty Journal Articles

It is generally thought that macronutrients stimulate intake when sensed in the mouth (e.g., sweet taste) but as food enters the GI tract its effects become inhibitory, triggering satiation processes leading to meal termination. Here we report experiments extending recent work (see [1]) showing that under some circumstances nutrients sensed in the gut produce a positive feedback effect, immediately promoting continued intake. In one experiment, rats with intragastric (IG) catheters were accustomed to consuming novel flavors in saccharin daily while receiving water infused IG (5 ml/15 min). The very first time glucose (16% w/w) was infused IG instead of water, …

Different Developmental Outcomes Following Lab Rearing By Biological Or Adoptive Mothers: Maternal Influence On Behavioral And Physiological Responses To Separation Stress In Rhesus Macaques (Macacamulatta), Andrea Sorenson, Dr. James D. Higley

Journal of Undergraduate Research

Initially this project was looking at the effects that multiple short term separations of a mother rhesus macaque from their infant would have on their relationship. More specifically, looking at adoption pairs (an infant raised by a non biological mother) to see if the relationship between the mother and the infant changed differently than the relationship of a mother and their biological infant. The focus of this analysis was looking at the mother/infant pair’s cortisol levels, which are a measure of the body’s physiological response to stress. The hope was to determine whether mother infant pairs with similar cortisol levels, …

Different Developmental Outcomes Following Lab Rearing By Biological Or Adoptive Mothers: Maternal Influence On Behavioral And Physiological Responses To Separation Stress In Rhesus Macaques (Macaca Mulatta), Whitney Maxwell, Dr. Dee Higley

Journal of Undergraduate Research

Under stressful conditions the activity of the hypothalamic-pituitary-adrenal (HPA) axis increases in both humans and animals leading to an increase in production of adrenocorticotropic hormone (ACTH). Maternal separation in nonhuman primates during infancy elicits behaviors characteristic of anxiety, such as withdrawal and nervous behavior and a substantial increase in ACTH (Higley and Linnoila 1997; Barr, Newman et al. 2004). Individual differences in anxiety in turn influence ACTH output, similar to what is seen in human children (Gunnar and Quevedo 2007). Infants response to separation physiologically and behaviorally is substantial and represents a significant stressor in the life of a young …

Effects Of Transcranial Magnetic Stimulation In A Rat-Model Of Human Depression, Brian J. Higginbotham, Dr. Erin Bigler

Journal of Undergraduate Research

Transcranial magnetic stimulation (TMS) is a relatively new technology that extends the ability to noninvasively stimulate cortical brain structures (Walsh and Rushworth, 1999). TMS involves placing an electromagnet on the scalp and turning it rapidly on and off through the discharge of capacitors, thereby producing a time-varying magnetic field that passes unimpeded through the skull and soft tissue. This altering magnetic field induces a changing electric field, which causes current flow in cortical tissue, resulting in neuronal depolarization.

The Efficacy Of Using Animal-Assisted Therapy To Decrease Maladaptive Behaviors In Children With Reactive Attachment Disorder, Trisha Markle, Dr. Gary Burlingame

Journal of Undergraduate Research

This study is currently still in progress. We are in the final stages of a pilot study that was supported by this ORCA grant. A new and funded version of the study will begin in January based upon the findings of the pilot. As noted in our IRB, our pilot study was conducted as a quality improvement project at Utah State hospital (USH).

Effects Of Chronic Alcohol Intoxication On The Dopaminergic Reward Pathway, Brian Hoyt, Dr. Scott Steffensen

Journal of Undergraduate Research

My research project studied the effects of chronic alcohol intoxication on the brain’s pleasure center (the mesocorticolimbic system). I worked with JungJae Park (M.S. in neuroscience) and three other undergraduate students. Because rats dislike the taste of alcohol, we injected the alcohol directly into their abdominal cavity. This was done under isoflourane anesthesia to avoid any discomfort for the animals. We injected three experimental rats an intoxicating dose of alcohol twice daily for three weeks. Three other rats were used as control subjects (received saline injections twice daily).

A Note On Pigs’ Knowledge Of Hidden Objects, Christian Nawroth, Mirjam Ebersbach, Eberhard Von Borell

Memory Collection

Object permanence is the notion that objects continue to exist even when they are out of observer’s sight. This ability is adaptive for free ranging animals who have to cope with a dangerous and highly changeable environment and allows them to be aware of predators sneaking in their proximity or to keep track of conspecifics or food sources, even when out of sight. Farm animals might also benefit from object permanence because the ability to follow the trajectory of hidden food or objects may lead to a higher predictability of subjects’ environment, which in turn might affect the level of …

Novel Behavioral Markers In The Ppt1-/- Mouse Model Of Infantile Neuronal Ceroid Lipofuscinosis, Joshua Thomas Dearborn

Dissertations

Infantile neuronal ceroid lipofuscinosis (INCL) is a lysosomal storage disease that is debilitating and fatal to children before their teenage years. The palmitoyl protein thioesterase 1 (PPT1) knockout (Ppt1-/-) mouse is an appropriate animal model that mimics much of the symptomology and brain pathology of the human disease. Ppt1-/- mice display blindness, seizures, and motor deficits and die well before wild-type mice. However, little is known about the cognitive and behavioral abilities of the Ppt1-/- mouse. This study was conducted to examine further the behavioral phenotype of the Ppt1-/- mouse model of INCL by evaluating the animals’ abilities in such …

Examining The Link Between Personality And Laterality In A Feral Guppy Poecilia Reticulata Population, Eleanor Irving, Culum Brown

Sentience Collection

This study examined whether variation in the strength and direction of lateralization in a detour task was linked with variation in three common personality measurements: boldness, activity and sociability, in a population of wild guppies Poecilia reticulata. Additionally, the aim was to determine whether any consistent correlations between these behavioural traits, known as behavioural syndromes, were present in the study population. The results revealed that all three personality traits were highly repeatable over time in both sexes. Evidence of a complex syndrome in the form of a correlation between boldness, sociability and activity was found; however, this relationship was only …

Ecological Psychology And Media Consumption Among Young Adults: A New Framework, Alice Diana Cade Ferguson

Dissertations

The Pew Research Center (2010, March 1) identified three crucial “new metrics of news” (p. 2) that help to explain the appeal of new, interactive media forms among young adult news consumers. These metrics of Portability, Personalizability and Participation (Pew, 2010) highlight the rapid transformations in technology and user interests that have helped create a new manifestation of what McLuhan called an “age of anxiety” (1967/2001, pp. 8-9) in mass media industries and in mass communication education and scholarship. The purpose of this research is to investigate this very shift in how news is delivered and consumed, with particular attention …

Empathy And Threatened Egotism In Men’S Use Of Violence In Intimate Relationships, Jessica H. Turner

Electronic Theses and Dissertations

The current study was undertaken to explore the relationship between self-esteem, narcissism, and empathy with intimate partner violence perpetration among men in 2 samples: college students and inmates. The sample was analyzed both as an aggregate and separately. A negative relationship was hypothesized between intimate violence perpetration and both self-esteem and empathy. A positive relationship was expected between intimate violence perpetration and narcissism. A 2-way interaction was examined between self-esteem and narcissism as a test of threatened egotism, defined as high self-esteem coupled with high narcissism, which was not expected in the current study. Empathy was hypothesized to moderate the …

Supportive Alignments & Teams In Group Supervision For School Counselors-In-Training, Christopher Sean Perrello

Communication and Rhetorical Studies - Theses

This thesis focuses on the formation of supportive alignments and interactional teams through particular linguistic strategies within the group supervision classroom, especially as participants provide one another with feedback on their professional behaviors. Through discourse analysis of transcripts of a video-recorded group supervision meeting, I illustrate how graduate level school counselors-in-training use language to construct alignments and teams. Discursive features that are identified and explicated include positive assessments of others, repetition, co-narration, constructed dialogue, and matching. In investigating these particular linguistic strategies, I emphasize how some of the major goals of group supervision (including feedback and reflection) are discursively expressed …

Preventative Behavioral Parent Training In A Primary Care Context: Initial Evaluation Of A Universal Prevention Program For Disruptive Behavior Disorders, Jessica L. Malmberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the biggest challenges parents face is effectively managing their child’s engagement in various disruptive behaviors including noncompliance, tantrums, and aggression. Typically when children begin exhibiting disruptive behaviors, parents will express their concerns to their pediatricians; however, there are significant barriers to parents gaining adequate guidance due to clinic time constraints, insurance reimbursement issues, and the limited training pediatricians receive in addressing these concerns. As such, children are generally referred to outside mental health clinics where additional barriers arise including waitlist delays and mental health stigmatization. The treatment for conduct problems (CP) that has proven most effective is referred …

Alternations Of Nmda And Gabab Receptor Function In Development: A Potential Animal Model Of Schizophrenia, Monica Bolton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Schizophrenia is a debilitating mental disorder that affects up to 3% of the world population. The behavioral symptoms are categorized into positive and negative symptoms, which appear during late adolescence/early adulthood. Unfortunately, the underlying cellular and molecular mechanisms of the disease are poorly understood. Several hypotheses exist to explain mechanisms contributing to these behavioral alterations. One model proposes that a reduced function of the NMDA glutamate receptor on specific GABAergic interneurons may be responsible for deficits in schizophrenia. Post-mortem investigations provide evidence of reductions in both glutamate and GABA-related proteins in patients with schizophrenia. Further, GABAergic interneurons that are activated …

Examining The Inner Experience Of Left-Handers Using Descriptive Experience Sampling, Aadee Mizrachi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Research suggests there are anatomical asymmetries of the human brain associated with right-hand or left-hand preference. In addition, left-handedness has been related to a wide range of psychological and physical problems. Despite these relationships, little is known about the inner experience of left-handers.

The present study, a replication of Mizrachi (2010) using a larger sample, used Descriptive Experience Sampling (DES) with three objectives: 1) examine the inner experience of left-handers; 2) compare the results of the present study to the results of Mizrachi (2010); and 3) compare the inner experience of left-handers to that of the general population as reported …

Assessing The Generality Of A Bout Analysis In The Description Of Operant Behavior, J. Adam Bennett

Dissertations

Operant psychologists typically use response rate as a primary measure of behavior. Although response rate has proven a useful dependent measure resulting in the identification of many important behavioral regularities, many researchers have argued that the measure has significant limitations. Primarily, response rate treats all responses in the measured response class as functionally equivalent and distributed uniformly across time. This conceptualization of behavior is useful as long as all responses are affected similarly by different experimental manipulations. Research has shown, however, that certain manipulations differentially affect responses with relatively short or long interresponse times. This has led to a new …

The Development And Use Of A Color Discrimination T-Maze Learning Task In The Zebrafish (Danio Rerio), Elizabeth Ann Lamb

Master's Theses

Zebrafish (Danio rerio) are becoming increasingly utilized in behavioral studies as a model of human learning and memory. The results of a previous study by Colwill, Raymond, Ferreira, and Escudero (2005) indicated that this species is capable of discriminating between colors and learning to respond to an assigned hue at either arm of a T-maze, indicating a learned association between the neutral stimulus and reward. While this original study showed that this task was appropriate for use in this species, we proposed that it had the potential to provide more data on specifics of the learning process with amended methods. …

Characteristics Of 4-H Participants And Their Psychosocial Development, Lauralee Lyons

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Volunteerism is an important component in the 4-H program. It was initially used as a method to help agents reach the many youth interested in participating in 4-H. Community service has since become a required component for every club project. Research shows that volunteering can impact youth in many different ways. Other research shows that 4-H youth are more likely to contribute or do some type of community service.

The present study uses the Modified Extended Version of the Object Measure of Ego Identity Status (EOMEIS), the Cognitive Autonomy and Self-Evaluation (CASE) inventory, and an instrument specifically designed to study …

Effects Of Check In/Checkout With A Fading Procedure On The Academic Engagement And Problem Behavior Of Elementary School Students, Leila Mullooly Miller

Dissertations

Though preliminary research indicates Check-In/Check-Out (CICO) is an effective intervention for improving problematic behavior in a variety of populations, the literature is limited in several ways. Several studies have relied on indirect measures of behavior, such as office discipline referrals (ODRs) and teacher ratings, to determine the effectiveness of CICO. However, indirect measures are not always reliable indicators of student behavior change, whereas direct observation is known to be an accurate tool for behavioral measurement. Therefore, the current study evaluated the effects of CICO on levels of problem behavior and academic engagement for a group of four elementary school students …

Insulin, Central Dopamine D2 Receptors, And Monetary Reward Discounting In Obesity, Danuta M. Gredysa

All Theses and Dissertations (ETDs)

No abstract provided.

The Predictors Of Calling And The Role Of Career Satisfaction In Working Adults, Kari Ann Leavell

Dissertations

A significant amount of time in adult life is spent working. Individuals enter into their world of work by many circumstances, including feeling called to a given career or viewing their work as a calling. The psychological construct of calling has been shown to have considerable implications for career-related outcomes, including career satisfaction. Further, satisfaction with work has demonstrated a considerable impact on more global areas such as satisfaction with and quality of life, meaning in life, and religiousness. Increased understanding of the construct of calling and its contribution to career development and career-related outcomes can clarify how individuals’ experiences …