Psychology Commons^™

The Effect Of Age-Related Declines In Inhibitory Control On Audiovisual Speech Intelligibility, Avanti Dey

All Theses and Dissertations (ETDs)

Audiovisual: AV) speech perception is perception in which both auditory and visual information is available in order to understand a talker, compared to an auditory signal alone, during face-to-face communication. This form of communication yields significantly higher word recognition performance as compared to either sensory modality alone, constituting a general AV advantage for speech perception. Despite an overall AV advantage, older adults seem to receive less benefit from this bimodal presentation than do younger adults. However, there is evidence to suggest that not all age-related deficits in AV speech perception are of a sensory nature, but are also influenced by …

Is Pressure Stressful? The Impact Of Pressure On The Stress Response And Category Learning, Shannon L. Mccoy, Steven B. Hutchinson, Lauren Hawthorne, Brandon J. Cosley, Shawn W. Ell

Psychology Faculty Scholarship

We examine the basic question of whether pressure is stressful. We propose that when examining the role of stress or pressure in cognitive performance it is important to consider the type of pressure, the stress response, and the aspect of cognition assessed. In Experiment 1, outcome pressure was not experienced as stressful but did lead to impaired performance on a rule-based (RB) category learning task and not a more procedural information-integration (II) task. In Experiment 2, the addition of monitoring pressure resulted in a modest stress response to combined pressure and impairment on both tasks. Across experiments, higher stress appraisals …

The Process Dissociation Of Moral Judgments: Clarifying The Psychology Of Deontology And Utilitarianism, Paul Conway

Electronic Thesis and Dissertation Repository

A growing body of work has examined responses to moral dilemmas where causing some degree of harm leads to a greater positive outcome; such dilemmas are said to pit deontological philosophical considerations (causing harm is never acceptable) against utilitarian philosophical considerations (causing harm is acceptable if it leads to the best possible outcome). According to dual-process theories of moral judgment, independent processes drive each judgment: affective reactions to harm drive deontological judgments, whereas cognitive evaluations of outcomes drive utilitarian judgments. Yet, theoretically both processes contribute to each judgment; therefore, it is an error to equate judgments with processes. To overcome …

Brain Activity And Medical Diagnosis: An Eeg Study, Laila M. Ribas, Fábio T. Rocha, Neli R. Ortega, Armando F. Rocha, Eduardo Massad

Armando F Rocha

Despite new brain imaging techniques that have improved the study of the underlying processes of human decision-making, to the best of our knowledge, there have been very few studies that have attempted to investigate brain activity during medical diagnostic processing.The main purpose of this paper was to investigate brain electroencephalography (EEG) activity associated with diagnostic decision-making in the realm of veterinary medicine using X-rays as a fundamental auxiliary test. The principal component analysis revealed four patterns that accounted for 85% of the total variance in the EEG activity recorded while veterinary doctors read a clinical history, examined an X-ray image …

The Role Of Cognition In Oral & Written Transmission As Demonstrated In Ritual Chant, Mary Elizabeth Husslein

Theses and Dissertations

This thesis examines the role of cognition in oral and written transmission. It looks at areas of music history where cognition is already used as a reference, including the development of notation, trends and changes in oral transmission, and performance practice. The thesis examines three different case studies on ritual chant in order to demonstrate how the cognitive process can be used to explain the ways learning, retention, and transmission work in oral and written transmission. The first case study is on the chant practices originating in Jerusalem. It discusses the intervallic relationships and music patterns involved in retention of …

Validation Of The Adapted Cogstate Brief Battery In Hematopoietic Cell Transplant Patients, Bethany Gourley

Master's Theses and Doctoral Dissertations

A small literature has documented cognitive deficits in adult hematopoietic cell transplant (HCT) survivors across the transplant trajectory, primarily occurring in memory, executive function, attention, and processing speed. Although HCT-associated cognitive decline occurring within one year of transplantation is well documented, only two studies have longitudinally investigated cognitive function in HCT survivors beyond one year. Furthermore, studies demonstrating neuropsychological decline have made use of numerous measures and varying impairment criteria, making the compilation of findings across studies challenging. Another difficulty with the current literature base is the use of traditional neuropsychological tests that are susceptible to practice effects and thus …

Visual Attention Bias And Body Dissatisfaction In Eating Disorders, Janet Lydecker

Theses and Dissertations

Eating disorders, such as anorexia and bulimia nervosa, have profound negative effects on the quality of life of both affected individuals and their families. Behavioral approaches such as cognitive-behavioral therapy (CBT) are commonly used for the treatment of these disorders. CBT teaches skills to restructure maladaptive thought patterns as a method of altering feelings and behaviors. However, even after CBT, 50-70% of women with bulimia and 67-87% of women with anorexia report continued eating disordered thoughts, feelings and behaviors. Measuring underlying cognitive processes such as orienting, maintaining, and executive attention in individuals with eating disorder symptomatology might be an important …

Decoding The Neural Mechanisms Of Human Tool Use., Jason P Gallivan, D Adam Mclean, Kenneth F Valyear, Jody C Culham

Brain and Mind Institute Researchers' Publications

Sophisticated tool use is a defining characteristic of the primate species but how is it supported by the brain, particularly the human brain? Here we show, using functional MRI and pattern classification methods, that tool use is subserved by multiple distributed action-centred neural representations that are both shared with and distinct from those of the hand. In areas of frontoparietal cortex we found a common representation for planned hand- and tool-related actions. In contrast, in parietal and occipitotemporal regions implicated in hand actions and body perception we found that coding remained selectively linked to upcoming actions of the hand whereas …

Diffusion Tensor Imaging And Neuropsychological Performance In Insulin Resistant Individuals, Elizabeth M. Lane

Dissertations

The current study sought to understand relationships between insulin resistance (IR), diffusion tensor imaging (DTI), and cognitive performance. It was hypothesized that IR would have a negative impact upon white matter and cognition. It was predicted that the uncinate fasciculus would be the most severely impacted, and this in turn would affect executive function and memory. Aim: The purpose of the study was to determine the impact of IR on white matter brain integrity among cognitively normal older adults using DTI and neuropsychological test performance. Background: The prevalence of IR has increased with growing incidence of obesity and older aged …

Anterior And Posterior Types Of Neuropsychological Deficits In Parkinson’S Disease: A Subgroup Classification Of Cognitive Outcome, Megan M. Risi

Honors Program Theses and Projects

Individuals with Parkinson’s disease (PD) exhibit cognitive deficits. Recent studies suggest there are distinct cognitive profiles of PD characterized by deficits in abilities that are dependent upon anterior versus posterior areas of the brain. While anterior-based deficits are more prevalent, posterior-based deficits are more predictive of the future occurrence of dementia in PD. The purpose of the current project was to examine these cognitive profiles in more detail. Performance on six tests of anterior function and six tests of posterior function was examined in 34 non-demented PD participants and 27 healthy control participants matched for age and education. Results showed …

Relations Among Type 2 Diabetes, Arterial Stiffness And Cognitive Functioning, Gregory A. Dore

Electronic Theses and Dissertations

Although the associations among diabetes mellitus, cognitive functioning and arterial stiffness have been explored previously, the degree to which arterial stiffness is responsible for the association between diabetes and cognitive function has not been examined. The primary aim of the current investigations is to examine the extent to which arterial stiffness mediates the association between diabetes and cognitive function, as well as the extent to which this indirect effect is modified by age and APOE genotype. The sample included 590 participants (age 23-94, 62% women, 12% African- American) from the seventh wave of the Maine-Syracuse Longitudinal Study. Individuals with history …

The Effects Of Progesterone Receptor On Development Of Serotonergic Circuits That Mediate Cognition, Heather Smith

Psychology

As the rate of premature births has been substantially increasing, progestin administration is becoming a common treatment for the prevention of preterm labor. However, not much is known regarding how these hormonal supplements may affect the development of the fetal brain. The developing brain is highly sensitive to progesterone as progesterone receptor (PR) is expressed in many regions during critical developmental periods. Steroid hormone receptors such as PR are powerful transcription factors and regulate gene expression to alter fundamental processes of neural development. During the developmental period of post-natal day one (P1) to P14 in rats, PR is transiently expressed …

The Influence Of Spatial Distance Priming On Test Anxiety And Judgments, Eric R Raap

Masters Theses & Specialist Projects

This paper examined the effects of distance priming on test anxiety and judgment. Research suggests that individuals’ perceived distance can impact their affect and judgments, which sheds light on the principle of “distance equals safety” (Williams & Bargh, 2008). Taking an exam invokes both cognitive and emotional anxiety, such as worry, panic, and tension. It is hypothesized that the distance priming may reduce test anxiety—particularly, the emotionality aspect—as well as perceived test difficulty. The results showed that, counter to the hypotheses, there was no significant difference among the three priming groups in their emotional test anxiety or perceived test difficulty. …

The Influence Of Children's Affective Ties On The Goal Clarification Step Of Social Information Processing, Amanda C. Thorn

Masters Theses & Specialist Projects

Previous studies have shown that children’s social goals are influenced by
emotion and that emotions can be manipulated using relationships. The present study combines these previous findings by examining the effect of children’s relationships on social goals. Social goals were examined in second and fifth grade children using hypothetical ambiguous provocation situations in which the relationship between the participant and the provocateur was manipulated by inserting the name of a friend, enemy, or a neutral peer into the story. After each situation, children rated the importance of four different social goals, indicating which of the four would be the most …

Intrinsic And Extrinsic Motivation: Abraham Lincoln As An Adult Learner, Warren Greer

Masters Theses & Specialist Projects

Over the last two decades, research has identified factors that foster versus undermine human motivation and well being with important implications for learning and performance. Much of the research is concerned with intrinsic versus extrinsic motivation and autonomous versus non-autonomous learning environments. The data suggests that learning and performance are often significantly enhanced in autonomy-supportive environments that foster intrinsic motivational perspectives. This study examines the lived experience of Abraham Lincoln in the context of his adult learning motivation, forming a qualitative narrative around his adult educational experiences. It was hypothesized that Abraham Lincoln benefited from learning experiences with high levels …

Ages Of Engagement In Risk Taking And Self-Harm: An Investigation Of The Dual Systems Model Of Adolescent Risk Taking, Brittany Dykstra

Masters Theses & Specialist Projects

Risk taking (RT) and self-harm (SH) are clinically, conceptually, and empirically
related, yet separate constructs, which occur most frequently during adolescence. The current study utilized retrospective reports of college students to determine reported ages of engagement in RT and SH behaviors. Reported ages were compared with predictions for ages of high frequency engagement in RT based on the Dual Systems Model of Adolescent Risk Taking (DSMART; Steinberg, 2010). The sample consisted of 228 college students, ranging in age from 18 to 48 years (mean 22.8), who completed a survey of commonly investigated RT (12 items) and SH (18 items) behaviors. …

Fkbp5 Modulates Attention Bias For Threat: Associations With Hippocampal Function And Morphology, Negar Fani, David Gutman, Erin Tone, Lynn Almli, Kristina B. Mercer, Jennifer Davis, Ebony Glover, Tanja Jovanovic, Bekh Bradley, Ivo D. Dinov, Alen Zamanyan, Arthur W. Toga, Elisabeth B. Binder, Kerry J. Ressler

Psychology Faculty Publications

Context: The FKBP5 gene product regulates glucocorticoid receptor (GR) sensitivity and hypothalamicpituitary‐adrenal axis functioning, and has been associated with a number of stress‐related psychiatric disorders. The study of intermediate phenotypes, such as emotion‐processing biases and their neural substrates, provides a way to clarify the mechanisms by which FKBP5 dysregulation mediates psychopathology risk.

Objective: To examine whether allelic variations for a putatively functional SNP associated with FKBP5 gene regulation (rs1360780) would relate differentially to attentional bias for threat; this was measured through behavioral response on a dot probe task and hippocampal activation during task performance. Morphological substrates of differential hippocampal response …

The Effect Of Oral Contraceptives On Performance In Sexually Dimorphic Cognitive Tasks, Kathryn Sears

Honors Theses

The goal of the current study was to further extend limited research assessing the effects of sex, menstrual phase, and oral contraceptive use on sexually dimorphic cognitive tasks, as well as emotional regulation. Studies have found that menstrual cycle phases have cognitive and physiological effects on women’s brains depending on the concentration of female sex hormones, progesterone and estrogen (Epting & Overman, 1998). Oral Contraceptive pills (OC) contain a concentration of these female sex hormones that have been shown to alter gray matter volume to resemble men’s brains in areas associated with learning, memory, spatial navigation, and emotional regulation (Pletzer …

Infants’ Responses To Affect In Music And Speech, Daniel K. Feinberg

Pitzer Senior Theses

Existing literature demonstrates that infants can discriminate between categories of infant-directed (ID) speech based on the speaker’s intended message – that is, infants recognize the difference between comforting and approving ID speech, and treat different utterances from within these two categories similarly. Furthermore, the literature also demonstrates that infants understand many aspects of music and can discriminate between happy and sad music. Building on these findings, the present study investigated whether exposure to happy or sad piano music would systematically affect infants’ preferences for comforting or approving ID speech. Five- to nine-month-old infants’ preferences for comforting or approving ID speech …

Physical Activity And Brain Function In Older Adults At Increased Risk For Alzheimer’S Disease, J. Carson Smith, Kristy A. Nielson, John L. Woodard, Michael Seidenberg, Stephen M. Rao

Psychology Faculty Research and Publications

Leisure-time physical activity (PA) and exercise training are known to help maintain cognitive function in healthy older adults. However, relatively little is known about the effects of PA on cognitive function or brain function in those at increased risk for Alzheimer’s disease through the presence of the apolipoproteinE epsilon4 (APOE-ε4) allele, diagnosis of mild cognitive impairment (MCI), or the presence of metabolic disease. Here, we examine the question of whether PA and exercise interventions may differentially impact cognitive trajectory, clinical outcomes, and brain structure and function among individuals at the greatest risk for AD. The literature suggests that the protective …

Dot Polarity In Dynamic Glass Patterns, Dawn Vreven, Timothy Petersik, Jim Dannemiller, Jamie Schrauth

Dawn L Vreven

Each frame of a Glass pattern consists of a random placement of dots and a spatially shifted copy of this pattern. Thus, each dot has a partner, forming dot-pair dipoles. When shown in succession, motion is perceived along the axis of the spatial shift. The perception of motion in dynamic Glass patterns is believed to be a two-stage process: first, local orientation detectors respond to the orientation signal in the dot-pair dipole; and second, global detectors integrate local orientation signals. We examined the ability to detect rotation in dynamic Glass patterns whose dipoles contained a) the same polarity, b) opposite …

Integration Of Speed Signals In The Direction Of Motion, Dawn Vreven, Preeti Verghese

Dawn L Vreven

Speed discrimination tasks were used to examine the spatial and temporal characteristics of the integration mechanism involved when signals are extended in the direction of motion. We varied the aspect ratio of a signal patch whose speed differed from the background, while holding the area of the signal patch constant, so that the signal patch could be either extended in the direction of motion or extended orthogonal to the direction of motion. Speed discrimination thresholds decreased dramatically as the signal patch was extended in the direction of motion. The spatial and temporal integration regions were larger than would be expected …

Music And Movement Share A Dynamic Structure That Supports Universal Expressions Of Emotion, Beau Sievers, Larry Polansky, Michael Casey, Thalia Wheatley

Dartmouth Scholarship

Music moves us. Its kinetic power is the foundation of human behaviors as diverse as dance, romance, lullabies, and the military march. Despite its significance, the music-movement relationship is poorly understood. We present an empirical method for testing whether music and movement share a common structure that affords equivalent and universal emotional expressions. Our method uses a computer program that can generate matching examples of music and movement from a single set of features: rate, jitter (regularity of rate), direction, step size, and dissonance/visual spikiness. We applied our method in two experiments, one in the United States and another in …

Language Development Among Preschool Age Children Born Prematurely, Brittany Nicole Peters

Wayne State University Theses

Premature birth has been shown to be associated with various deficits in neuropsychological functioning during early childhood; however, few studies have attempted to understand the variables that contribute to variability in performance among children born prematurely. The purpose of the current study was to investigate the relationships between specific perinatal factors and language and cognitive outcome measures in a group of preschool-aged children born prematurely (N=47). As predicted, there were significant relationships between sex and specific outcome measures, with boys performing more poorly than girls; however, contrary to hypotheses, significant relationships failed to be found between outcome measures and both …

Antidepressant Medications And Cognitive Functioning In Major Depressive Disorder, Rachel Kay

Wayne State University Theses

Individuals with Major Depressive Disorder (MDD) frequently experience cognitive decrements in addition to mood impairments. Ironically, antidepressant medications used to treat depression may have adverse effects on cognitive functioning. It is imperative to understand the relative cognitive costs of antidepressants when considering the treatment of MDD patients. Furthermore, observational studies of depression are challenged by problems of systematically confounded variables. Researchers are often faced with difficulties in managing this issue and opt to either ignore the problem, alter their sample, or use inappropriate statistical methods (e.g., Analysis of Covariance) due to a limited understanding of acceptable solutions. It is important …

How Mean Is The Mean?, Craig P. Speelman, Marek Mcgann

Research outputs 2013

In this paper we voice concerns about the uncritical manner in which the mean is often used as a summary statistic in psychological research. We identify a number of implicit assumptions underlying the use of the mean and argue that the fragility of these assumptions should be more carefully considered. We examine some of the ways in which the potential violation of these assumptions can lead us into significant theoretical and methodological error. Illustrations of alternative models of research already extant within Psychology are used to explore methods of research less mean-dependent and suggest that a critical assessment of the …

Source Memory And Generation Effects In Parkinson's Disease, Lynn Elizabeth Oelke

USF Tampa Graduate Theses and Dissertations

The primary aim of this study was to investigate source memory performance in individuals diagnosed with Parkinson's disease (PD). The secondary goal was to explore how memory was impacted when subjects were asked to generate responses during encoding. Fifty idiopathic PD patients and fifty healthy control subjects completed a task measuring item memory and source memory which also included a generation manipulation. Relative to controls, PD patients exhibited deficits in source memory but not item memory. Both groups demonstrated enhanced memory performance in the generative condition of the item memory task. The PD group displayed a marginally significant trend toward …

Effects Of Construal Level On The Reliance On Affect Versus Substance, Ellen O'Malley

Legacy Theses & Dissertations (2009 - 2024)

The influence of construal level on judgment and decision-making is often seen in consumer research. However, the effect of construal level on preferences for evaluative inputs rather than final products is less explored. Two experiments were conducted to examine whether construal level affects the degree to which individuals rely on either affective or substantive information when making evaluative judgments; specifically, that abstract construals increase reliance on affective information, whereas concrete construals increase reliance on substantive information. Experiment 1 provided evidence for a relative preference for affective versus substantive information when engaged in abstract and concrete construals, respectively. Experiment 2 replicated …