Psychology Commons^™

The Effects Of Size And Principal Axis Difference Ratio On The Use Of Featural And Geometric Cues, Spencer J. Price

Honors College Theses

Enclosure size has been shown to affect an animal’s reliance on featural and geometric cues when reorienting in space. Previous research has shown that humans and animals rely primarily on geometric cues in smaller enclosures, and on featural cues in larger enclosures. The multiple-bearings hypothesis predicts that directional information is more discriminable than distance information when landmarks are father away from a goal. As the size of the environment increased, the distance information was less discernible than featural information. In the current study, we tested to see if the reliance on geometry changes across enclosure size. Three different Principal Axis …

What Do We See: Number Line Estimation With Eye Tracking, Sarah Ann Salas

UNLV Theses, Dissertations, Professional Papers, and Capstones

The following paper presents a study investigating adult number line estimation patterns through use of an eye tracker. Estimation patterns were examined by changing the range of the number line on which the estimations occur from the typical ranges of 0-100 and 0-1000 to a more difficult range of 0-723. There were two main conditions of the experiment; in one condition the number to estimate and the number line were presented simultaneously, and in the other condition, the number line presentation was delayed. In each of the two conditions of the experiment, eye fixations and area of interest analysis were …

Improved Cardiorespiratory Fitness Is Associated With Increased Cortical Thickness In Mild Cognitive Impairment, Katherine Reiter, Kristy A. Nielson, Theresa J. Smith, Lauren R. Weiss, Alfonso J. Alfini, J. C. Smith

Psychology Faculty Research and Publications

Cortical atrophy is a biomarker of Alzheimer’s disease (AD) that correlates with clinical symptoms. This study examined changes in cortical thickness from before to after an exercise intervention in mild cognitive impairment (MCI) and healthy elders. Thirty physically inactive older adults (14 MCI, 16 healthy controls) underwent MRI before and after participating in a 12-week moderate intensity walking intervention. Participants were between the ages of 61 and 88. Change in cardiorespiratory fitness was assessed using residualized scores of the peak rate of oxygen consumption (V̇O_2peak) from pre- to post-intervention. Structural magnetic resonance images were processed using FreeSurfer v5.1.0. …

Relationship Between Serum Biomarkers And Three-Month Outcomes Following Pediatric Traumatic Brain Injury (Tbi), Alicia Leanne Janos

Arts & Sciences Graduate Student Theses and Dissertations

With more than 475,000 cases annually, traumatic brain injury (TBI) is the leading cause of morbidity and mortality in children. Promising new tools for the prediction of functional outcomes following pediatric TBI are biomarkers of brain injury that can be detected in blood serum. The most commonly studied biomarkers, S100β, neuron-specific enolase (NSE), and myelin basic protein (MBP), have myriad limitations which preclude their use in clinical care. In the present study, serum concentrations of two novel biomarkers of brain injury (i.e., ubiquitin carboxy-terminal hydrolase-L1, UCH-L1; glial fibrillary acidic protein, GFAP) were collected 24 hours following severe TBI in 30 …

Contrasting Styles In Cognition And Behaviour In Bumblebees And Honeybees., David F Sherry, Caroline G Strang

Psychology Publications

Bumblebees and honeybees have been the subjects of a great deal of recent research in animal cognition. Many of the major topics in cognition, including memory, attention, concept learning, numerosity, spatial cognition, timing, social learning, and metacognition have been examined in bumblebees, honeybees, or both. Although bumblebees and honeybees are very closely related, they also differ in important ways, including social organization, development, and foraging behaviour. We examine whether differences between bumblebees and honeybees in cognitive processes are related to differences in their natural history and behaviour. There are differences in some cognitive traits, such as serial reversal learning and …

Tract-Based Spatial Statistics In Preterm-Born Neonates Predicts Cognitive And Motor Outcomes At 18 Months., E G Duerden, J Foong, V Chau, H Branson, K J Poskitt, R E Grunau, A Synnes, J G Zwicker, S P Miller

Brain and Mind Institute Researchers' Publications

BACKGROUND AND PURPOSE: Adverse neurodevelopmental outcome is common in children born preterm. Early sensitive predictors of neurodevelopmental outcome such as MR imaging are needed. Tract-based spatial statistics, a diffusion MR imaging analysis method, performed at term-equivalent age (40 weeks) is a promising predictor of neurodevelopmental outcomes in children born very preterm. We sought to determine the association of tract-based spatial statistics findings before term-equivalent age with neurodevelopmental outcome at 18-months corrected age.

MATERIALS AND METHODS: Of 180 neonates (born at 24-32-weeks' gestation) enrolled, 153 had DTI acquired early at 32 weeks' postmenstrual age and 105 had DTI acquired later at …

Serotonergic Regulation Of Prefrontal Cortical Circuitries Involved In Cognitive Processing: A Review Of Individual 5-Ht Receptor Mechanisms And Concerted Effects Of 5-Ht Receptors Exemplified By The Multimodal Antidepressant Vortioxetine, Steven C. Leiser, Yan Li, Alan Pehrson, Elena Dale, Gennady Smagin, Connie Sanchez

Department of Psychology Faculty Scholarship and Creative Works

It has been known for several decades that serotonergic neurotransmission is a key regulator of cognitive function, mood, and sleep. Yet with the relatively recent discoveries of novel serotonin (5-HT) receptor subtypes, as well as an expanding knowledge of their expression level in certain brain regions and localization on certain cell types, their involvement in cognitive processes is still emerging. Of particular interest are cognitive processes impacted in neuropsychiatric and neurodegenerative disorders. The prefrontal cortex (PFC) is critical to normal cognitive processes, including attention, impulsivity, planning, decision-making, working memory, and learning or recall of learned memories. Furthermore, serotonergic dysregulation within …

Ptsd Symptom Severity And Neurocognitive Performance As A Function Of Combined Tms And Imaginal Exposure In Oif/Oef Combat Veterans With Treatment Resistant Ptsd, Katharine Seagly

Psychology Theses & Dissertations

Posttraumatic Stress Disorder (PTSD) is a commonly occurring mental health diagnosis, and is particularly prevalent in combat veterans. Although there has been some success treating PTSD with various forms of therapy, many cases remain refractory to the current standard of care. This pilot study combines transcranial magnetic stimulation (TMS) to the right dorsolateral prefrontal cortex (DLPFC) and the supplementary motor area (SMA) with a standardized exposure protocol for the treatment of chronic, treatment-resistant PTSD. The aims are to (1) determine if the treatment is safe and well tolerated, (2) determine if PTSD and concomitant depression and anxiety symptoms improve, and …

Developing & Describing The Use & Learning Of Conceptual Models For Integer Addition And Subtraction Of Grade 5 Students, Nicole Marie Wessman-Enzinger

Theses and Dissertations

This dissertation reports the results of a teaching experiment, which explored student thinking about integer addition and subtraction. Through the lens of commognitive theory (Sfard, 2008), interpreting negative integers as secondary intuitions (Fischbein, 1987), and employing teaching experiment methodology (Steffe & Thompson, 2000), this study was a first step in developing more robust descriptions of students' conceptual models for integer addition and subtraction. I investigated: (a) the conceptual models that students exhibited, (b) the various ways that students utilized conceptual models while learning about the addition and subtraction of integers, and (c), the ways that students' conceptions evolved over the …

Auditory Reaction Time And Behavioral Working Memory Differences Between Musicians And Non-Musicians, Benjamin Richardson, Zach Felke, Marisha Medrano, Grace Whorley, Hannah Williams

Symposium Of University Research and Creative Expression (SOURCE)

Previous research investigating working memory functioning between musicians and non-musicians has demonstrated differences related to music experience in auditory reaction tasks. This body of research suggests music experience may be related to faster reaction times to auditory stimuli. In addition to reaction times recorded by clicking a mouse while listening to a tonal oddball, participants in the current study performed six subtests of the TOMAL-2, a standardized measure of working memory ability, documenting participants visual, auditory, and executive functioning modules of working memory. Our hypotheses are that means of performance on all three subtests of the TOMAL-2 will be higher …

Effects Of Rhes Prenylation On Mouse Cognition In A 3-Nitropropionic Acid Animal Model Of Huntington's Disease, Diana Hobbs

LSU New Orleans Theses and Dissertations

Located on the short arm of chromosome 4, there exists a gene, IT15, responsible for the trinucleotide CAG expansion involved in the autosomal dominant neurodegenerative disorder known as Huntington’s disease (HD). The brain region associated with the most atrophy, the striatum, leads to expression of severe motor dysfunction, the hallmark feature of HD. To a lesser degree, the cortex and hippocampus show earlier deterioration indicative of the cognitive deficits that occur prior to motor symptom onset. The brain regions associated with HD-induced neuronal death additionally selectively express the protein Rhes - the combination of Rhes and mutant huntingtin being cytotoxic. …

Effects Of Digitally Enhanced Learning Tasks On Cognitive Functioning, Reyn Yoshiura

Student Scholar Symposium Abstracts and Posters

Are brain-training applications effective? In recent years the popularity of brain training programs, such as Lumosity, Brain Age, Big Brain Academy and Elevate has increased significantly. These programs assert that the consistent use of their program can potentially result in increases in cognitive function. The current body of cognitive research shows that these programs train working memory; due to its integral part in general cognition. This research compared the effectiveness of digitally enhanced working memory tasks, versus active control groups for improvements on measures of cognitive functioning. It was hypothesized that the digitally enhanced working memory tasks would have greater …

Traumatic Experiences And Cognition: How Do Static And Dynamic Variables Contribute To Current Functioning?, Cathryn Richmond

Masters Theses, 2010-2019

Approximately 25% of children in the United States will witness or experience a traumatic event before age 4, and individuals with a history of trauma, particularly traumatic events in childhood, have a much higher likelihood of developing psychopathology in adulthood. Prior research indicates that the vast majority of individuals with a serious mental illness, particularly those in community mental health centers and psychiatric inpatient settings, have experienced at least one traumatic event in their lifetime. These individuals require special consideration in treatment planning, and a large range of neurodevelopmental and environmental factors must be taken into account when interpreting results …

Stereotype Threat And Ocd: The Impact Of Messy Vs. Clean Environments On Cognitive Test Performance, Ellen Rebecca Kendall

Undergraduate Honors Thesis Collection

Stereotype threat has been researched in a variety of contexts such as African Americans' intellect, older adults' memory, and women's performance in math. Despite this extensive research, little has been done in the domain of mental illness. This study examines whether stereotype threat can be induced in people high in OCD symptoms. I hypothesized that, when given explicit information about their OCD tendencies, individuals high in OCD symptoms would perform less well on cognitive tests in a messy than a clean environment compared to those low in OCD symptoms. Group testing sessions included a mix of college students high (n=25) …

The Effects Of Perceived Enjoyable Activities On Cognition In Late-Life., Hannah D. Gardner

College of Arts & Sciences Senior Theses

Previous research suggests that more involvement in various activities can help delay cognitive decline in older adults. Few studies have examined both the impact of frequency and perceived enjoyment of different types of activities on cognition. This study analyzed the relationship between frequency and pleasure of activities and cognition by running correlations using the five different subscales of the California Older Person’s Pleasant Events Schedule (COPPES) and a battery of cognitive tests (Block Design, Animal Naming, Boston Naming Test, Trails A, Trails B, CVLT-LDFR, & Digit Span). It was hypothesized that higher frequency as well as higher level of enjoyment …

Can Dolphins Cooperate To Solve A Novel Task?, Kelley Ann Winship

Master's Theses

Bottlenose dolphins cooperate in a variety of contexts, including foraging,acquiring mates, playing, and assisting distressed conspecifics. To better understand the capacity for cooperative behaviors, animals are often given tasks that require pairs of animals to coordinate their actions in order to receive a reward. This paper reports the results of an aquatic version of one such task: cooperative rope-pulling. Three groups of captive bottlenose dolphins (Tursiops truncatus) were given an apparatus that could most easily be opened by the two animals working together. Two untrained adult males at one location were successful in opening the apparatus together, sharing …

A Manipulation Of Cognitive Restriction And Goal-Conflict: Mechanisms Underlying The Disinhibition Effect Of Eating Behavior, Kayla D. Skinner

Graduate Theses and Dissertations

People are often faced with a self-control dilemma whenever the attainment of a long-term goal would come at the expense of an alluring temptation. The goal-conflict model of eating (Stroebe, van Koningsbruggen, Papies, & Aarts, 2013) suggests that restrained eaters (i.e., chronic dieters) experience self-regulation failure (e.g., overeating, or disinhibition) due to inner competing goals of eating enjoyment and weight control. The current study examined these concepts in a sample of people classified as unrestrained eaters (N = 123), allowing for an investigation of restricted cognitive focus as a causal mechanism of disinhibited eating. A 2 (restraint condition: restriction, intuitive …

Mindfulness, Self-Regulatory Capacity, And Regulation Of Health Behaviors - 2015 Award Winner, Elizabeth Mccrary

Russell Library Undergraduate Research Award

Mindfulness, the trait or state of heightened attention and awareness of the present moment, has been connected to a wide variety of self-regulatory behaviors, including health behaviors. Specifically, mindfulness has been linked to smoking cessation (Heppner et al., 2015), reduced alcohol misuse (Murphy & MacKillop, 2011), and reduced substance abuse (Witkiewitz & Bowen, 2010). Additionally, mindfulness-based dialectical behavior therapy has been successful in teaching affect regulation skills to patients with binge eating disorder (BED). BED patients were also more adept in using these regulation skills during negative affect experiences (Kristeller, Baer, & Quillian-Wolever, 2006). Even though research links mindfulness to …

Are There Differences In Eeg Metrics Between Younger And Older Healthy Adult When Performing Challenging Cognitive Tasks?, Brian Cheah, Dr. Priscilla Macrae, Dr. Janet Trammell, Greta Davis, Dylan Bergstedt, Jessica Chao, Nancy Zelaya

Seaver College Research And Scholarly Achievement Symposium

The prevalence and cost of dementia continues to rise, with the cost of treatment in the U.S. estimated at $157 billion per year (Hurd et al., 2013). Understanding cognitive function in older adults and associated brain activity could lead to the development of better prevention and treatment of dementia. Therefore, this study examined the effects of aging on brain activity, as measured by electroencephalography (EEG) in younger and older adults. EEG activity was monitored before, during, and after healthy older (70-79 years of age; N = 20) and younger adults (20-29 years of age; N = 16) completed three computerized …

Physiological And Subjective Aspects Of Positive Mood In Relation To Executive Functioning: The Potential Moderating Role Of Personality, Luz Helena Ospina

Dissertations, Theses, and Capstone Projects

Positive affect has been demonstrated to improve aspects of cognition. However, recent studies reveal that positive affect may hinder the same cognitive processes, such as executive functioning, memory and creativity. These discrepant findings may be due to differing levels of physiological arousal, a component of the circumplex model of affect, which has been largely ignored in affective research. For example, one recent study suggests that positive valence coupled with varying levels of physiological arousal (i.e., low, moderate, and high) may differentially affect performance on tasks of verbal fluency and memory. Furthermore, one other explanation for these inconsistent findings may relate …

Age Related Decline In Memory: Examining The Mediation Effect Of Processing, Executive Functioning And Intelligence In Normal Adults, Jada J. Stewart

Theses and Dissertations

Multiple mediation analyses that collectively examine the prominent theories of cognitive aging (i.e., Common Cause, Processing, and Executive Decline Hypotheses) along with other cognitive domains that are sensitive to aging are rare. Moreover, having identified that cognition begins to decline as early as 30 years old, few studies have examined the mechanisms that underlie memory change among younger aging individuals. As a result, it is unclear whether relevant mediating variables have been excluded from early research on age-related memory decline, or to what extent rehabilitative strategies are applicable as early interventions for maintaining cognitive functioning into late life.

The present …

Core Beliefs And Self-Schematic Structure In Depression, David J.A. Dozois, Katerina Rnic

Psychology Publications

This article reviews recent research on core beliefs (i.e., early maladaptive schemas; EMS) and self-schema structure in depression. The empirical research supports these variables as vulnerability factors for depression. Whereas EMS operate independently of stress, cognitive organization appears to influence depression in a manner consistent with a diathesis-stress model. Recent research has also explored predictors of EMS and schema structure. Specifically, childhood adversity (e.g., emotional maltreatment, peer rejection) are associated with negative self-schemas and core beliefs. Schema beliefs and structure also mediate the relation between early adversity and subsequent depression. Fortunately, these deeper cognitions appear to be modifiable by psychological …

Key Generalization Of Recognition Memory For Melodies, Abigail Lincoln Kleinsmith

Legacy Theses & Dissertations (2009 - 2024)

People easily recognize a melody in a previously unheard key, but they also retain some key-specific information. I tested the hypothesis that individuals compare novel melodies to a memory “prototype” representing the central tendency of experienced exemplars. Participants were familiarized with a monotonic eight-note melody in two closely separated keys and tested for discrimination of that melody from others. Test and foil melodies included ones that were the “average” of pitch heights and ones that were more distant in pitch height. Hit rates and discriminability (d') were better for physically closer keys than for harmonically related keys. In follow-up experiments, …

Buzzfeed To Behavior: In Search Of Sustainable Spillover From Happiness-Based Information Interventions, Leah Gerber

Undergraduate Honors Thesis Collection

Humans go to great lengths to bolster happiness, whether it be for a t1eeting moment or for a more abiding sense of psychological well-being. Current research suggests that one way to increase human happiness is through spending time in nature (Zelenski & Nisbet, 2014). It is important to note that human happiness is a multifaceted construct, with both affective and cognitive components (Zelenski & Nisbet, 2014). In this study we aimed to examine both the affective and cognitive components of happiness-in other words, hedonic happiness and eudaimonic happiness-in order to add to the burgeoning body of literature that is environmental …

The Role Of Awareness Of Repetition During The Development Of Automaticity, Emma Shadbolt

Theses : Honours

Investigation into the influence of contextual information on performance of an automatic task has found inconsistent results. The majority of studies have investigated whether changing the context of a simple cognitive task can inhibit an automatic response, but do not review whether context can help the development of automatic responding. The current study examined whether bringing awareness to the context of a simple numerosity task could aid the development of automaticity. It also examined whether participants were aware of when automaticity developed for them via a post-test interview. The numerosity task used in this study was a simple counting task …

Impact Of Urban Nature On Executive Functioning In Early And Middle Childhood, Anne R. Schutte, Julia C. Torquati, Heidi L. Beattie

Department of Psychology: Faculty Publications

According to attention restoration theory, directed attention can become fatigued and then be restored by spending time in a restorative environment. This study examined the restorative effects of nature on children’s executive functioning. Sevento 8-year-olds (school aged, n = 34) and 4- to 5-year-olds (preschool, n = 33) participated in two sessions in which they completed an activity to fatigue attention, then walked along urban streets (urban walk) in one session and in a park-like area (nature walk) in another session, and finally completed assessments of working memory, inhibitory control, and attention. Children responded faster on the attention task after …

Examining Behavioral Reactivity And Cognitive Differences Within The Chc Theory Of Intelligence Among Children., Steven Matthew Jozwiak

Walden Dissertations and Doctoral Studies

Linking cognition and behavior has long been an area of interest to the field of psychology in its endeavors to understand what innate factors influence human behavior. To date, the majority of research linking emotional reactivity to cognition has focused on single areas of intellectual functioning on specific diagnostic profiles or learning disorders rather than a comprehensive comparison to cognitive profile typology. Nearly all the research conducted to date continues to define cognition and emotion as disparate entities, rather than exploring a more integrated view of emotion and cognition. The purpose of this quantitative study was to examine cognitive profile …

Association Between Toxocariasis And Cognitive Function In Young To Middle-Aged Adults, Bruce L. Brown, Lance D. Erickson, Shawn D. Gale, Andrew Berrett, Dawson W. Hedges

Faculty Publications

The ascarid nematodes Toxocara canis (Werner, 1782) and Toxocara cati (Schrank, 1788) may infect humans resulting in toxocariasis. A prior study associated species of Toxocara Stiles, 1905 with cognitive deficits in children. To determine if a similar association between toxocariasis and cognition exists in adults, we analysed a large dataset from the United States’ Center for Disease Control’s National Health and Nutrition Examination Survey. We used linear-regression and multivariate models to examine the association between toxocariasis as assessed by the presence of anti-Toxocara IgG antibodies and three measures of cognitive function – simple reaction time (SRT), symbol-digit substitution (SDS) and …

Effects Of Nicotine Withdrawal On Motivation, Reward Sensitivity And Reward-Learning, Jason A. Oliver

USF Tampa Graduate Theses and Dissertations

Research on addictive behavior has traditionally emphasized the role that primary reinforcing effects of drugs of abuse plays in the development and maintenance of dependence. However, contemporary behavioral economic theory and animal models of nicotine dependence suggest the need for greater attention to the impact that response to alternative rewards may have on smoking behavior. The present study sought to investigate the impact of nicotine withdrawal on self-report, behavioral and neural indices of motivation, immediate response to rewards and the capacity to learn and modify behavior in response to positive and negative feedback. Heavy smokers (n = 48) completed two …

A Longitudinal Study Evaluating The Effects Of Interferon-Alpha Therapy On Cognitive And Psychiatric Function In Adults With Chronic Hepatitis C, Marilyn Huckans, Bret Fuller, Viva Wheaton, Sarah Jaehnert, Carilyn Ellis, Michael Kolessar, Daniel Kriz, Jeanne Renee Anderson, Kristin Berggren, Hannah Olavarria, Anna W. Sasaki, Michael Chang, Kenneth D. Flora, Jennifer M. Loftis

Faculty Publications - Doctor of Psychology (PsyD) Program

Objective: To prospectively evaluate for changes in objective cognitive performance (attention, memory, and executive function) and psychiatric symptom severity (depression, anxiety, fatigue, and pain) in patients before, during and after interferon-alpha based therapy (IFN) for chronic hepatitis C virus infection (HCV).

Methods: 33 HCV+ adults were evaluated two months before IFN initiation (baseline), three months into IFN, and six months following IFN termination (IFN+ Group). 31 HCV+ adults who did not undergo IFN therapy were evaluated at baseline and six months later (IFN− Group). At each evaluation, participants completed the Neuropsychological Assessment Battery (NAB) Attention, Memory and Executive Functions Modules, …