Uncertainty Monitoring In Category Learning And Transfer, Rose Deng

Electronic Theses and Dissertations

Uncertainty is commonly experienced by many people during learning and decision making. Given that many career paths require the ability to monitor uncertainty, it’s important to understand how metacognitive processes influence cognitive performance. In attempts to explore how uncertainty monitoring impacts learning, three experiments were conducted. The first and second experiment utilized a categorization task in which participants explicitly learned to categorize Chemistry concepts. The third experiment assessed the impact of uncertainty monitoring on implicit learning and utilized a different task to tap into the implicit learning system. The present dissertation is one of few to investigate the role of …

The Effects Of Survival, Pleasantness, And Storytelling Conditions On True And False Memory Recollection, Rachel Daniels

Honors Theses

The purpose of the present study was to analyze the extent to which various processing scenarios influenced participants' rates of true and false memory recollection. Participants were placed in one of three conditions, storytelling, survival, or pleasantness, and then studied a list of common nouns. They were then instructed to comment on the words in a specific manner depending on the condition to which they were randomly assigned. Following this, participants completed a math distractor task, and were then asked to complete a free recall test for the previously studied words. The results indicated that participants in the storytelling condition …

Interprofessional Practice And Handling The First Break: A Case Study, Jalen D. Clemmons

Social Work Masters Capstone Projects

Handling the first psychotic break can be a delicate process. In order to do so effectively, it is important to utilize the perspectives and disciplines offered within an inter-professional team. This paper is a case study revolving around the work done by an inter-professional treatment team at Eastern State Hospital.

Sources Of Top-Down Processing In Recognition Of Repeated Speech In Noise, Liam Gleason

Open Access Theses & Dissertations

Prior research has shown that repetition facilitates speech recognition in difficult listening environments, as indicated by more accurate reporting and lower subjective noise ratings. Both effects were found even when sentences were read at encoding, suggesting that the top-down processing involved comes from a modality-general level of representation (Gleason & Francis, 2021). We investigated whether this top-down processing comes from the semantic or lemma level of language representation. Bilingual participants listened to sentences in English and Spanish. At test, these sentences and new sentences were presented auditorily in English with background noise. After listening to each sentence, participants reported the …

Who Said What To Whom?: Contextual Memory Processes In Bilinguals, Naoko Tsuboi

Open Access Theses & Dissertations

Source memory is memory for sources of information (who gave the information), whereas destination memory is memory for destinations of information (to whom the information was given). Prior literature found that source memory exceeded destination memory, and destination memory was impaired remarkably under high cognitive demand tasks. These findings supported the attention hypothesis, the idea that greater attentional resource availability leads to better source and destination memory. The current study extended prior source and destination research to bilingualism because bilinguals are thought to have a greater attention control ability than monolinguals. In the only published study to compare bilingual and …

Thinking About Episodic Future Events As A Way To Reduce Smoking Behavior: An Ecological Momentary Assessment Study, Stephanie Joann Kane

Graduate Theses and Dissertations

With nearly 35 million Americans currently estimated to smoke and an approximate seven out of ten adult smokers wanting to quit, it is clear that there is a need for enhanced smoking cessation techniques. Encouraging people to think about a future smoke-free self may help to encourage and motivate changes in smoking behavior. The present study investigated the role of an episodic future thinking manipulation on the motivation to quit smoking using ecological momentary assessment (EMA). Participants (N = 103) were randomly assigned to either an episodic future thinking (EFT) condition or an episodic recent thinking (ERT) condition, and were …

Disharmony Of The Soul: A Philosophical Analysis Of Psychological Trauma And Flourishing, Adam Blehm

Graduate Theses and Dissertations

In this dissertation I argue that psychological trauma hinders human flourishing by disrupting psychic harmony and hindering virtuous relationships. Given the negative symptomology of posttraumatic stress related disorders (i.e., PTSD) this conclusion may seem a bit obvious to some. However, making the case for trauma as a hindrance to human flourishing is more complicated than it may first appear.

First, in the extant literature, trauma as a concept tends to be unclear. In much of the empirical and philosophical literature, trauma can include a certain kind of event, experience, effect, or a combination of all three. Furthermore, because of practical …

The Effect Of Numeracy And Math Anxiety On Whole Number Bias, Jasmine Jessica Leanna Bonsel

Electronic Theses, Projects, and Dissertations

Whole number bias (WNB) has been defined as the tendency to apply natural number knowledge to rational numbers. This misapplication can often lead to erroneous responses in mathematical tasks and understanding of rational number properties. Whole number bias can be explored using Dual Processing Theories. According to Dual Processing Theory we have two types of thinking: Type I and Type II. Type I is fast, heuristic based, intuitive, and doesn’t require working memory, while Type II is slow, logic based, analytical, and requires working memory. Some researchers argue that WNB is an intuitive phenomenon and occurs from a failure to …

Effects Of Top-Down Attention And Individual Differences On Recognition Memory And Recollective Experience., Anna Kelley

Electronic Theses and Dissertations

Memory accuracy and detail hold practical importance, and psychology has studied means to improve memory. One such means is performing visually guided saccades immediately before a memory test. Previous work has found this intervention to improve memory performance, an effect dubbed Saccade-Induced Retrieval Enhancement or SIRE. The top-down attentional control account posits that SIRE occurs because saccades activate attentional control regions in the brain, which contributes to executing top-down attentional control when searching memory. The current experiment tested this account of SIRE by attempting to replicate previous results and investigating whether a different attentional task, the Revised Attention Network Test …

Dimensionality Of Natural Auditory Scene Perception: A Factor Analysis Study, Margaret A. Mcmullin

UNLV Theses, Dissertations, Professional Papers, and Capstones

Theories of auditory and visual scene analysis suggest the perception of scenes relies on the identification and segregation of objects within it, resembling a detail-oriented processing style, but it is possible that a global-oriented process also occurs while evaluating auditory scenes. There is evidence for global properties that enable rapid recognition of visual scenes, even without recognizing the individual objects comprising the scene. It is our understanding that a similar line of research has not been explored in the auditory domain; therefore, we evaluated the contributions of high-level global and low-level acoustic information to auditory scene perception. A secondary aim …

Prenatal Opioid Use And Neonatal Abstinence Syndrome: A Review Of The Neurophysiological, Neuropsychological, And Behavioral/Emotional/Social Impacts In The Pediatric Population, Candice Gore

Dissertations

The opioid epidemic over the past two decades has raised concerns regarding the developmental fetal impact of prenatal opioid use. Research in this area continues to grow, but largely has focused on treatment for neonates experiencing withdrawal symptoms postnatally. Long term clinical implications for this at-risk population have not been studied extensively leaving many gaps in research and highlighting the need for future empirical studies. This literature review will examine the neurophysiological, neuropsychological, and the behavioral/social/emotional impacts on infants, toddlers, and school aged children who were prenatally exposed to opioids with or without the diagnosis of neonatal abstinence syndrome. Providing …

The Impact Of Alzheimer Disease On Semantic Knowledge, Maileen G. Ulep

UNLV Theses, Dissertations, Professional Papers, and Capstones

The research furthers the understanding of the impact of Alzheimer disease (AD) on cognition and the organization of semantic knowledge in the brain, which might contribute to the development of diagnostic and staging tools, and interventions to palliate cognitive deficits. The disruption of semantic knowledge in AD is well documented in the literature. Much of the existing research focuses on the general impact AD has on semantic knowledge. This study explores the impact of AD on specific domains of knowledge, chiefly, living kinds and artifacts, critical to ordinary functioning. The content, organization and structure of the investigated domains of knowledge …

The Stability Of The Speech-To-Song Illusion And Individual Differences, Rodica R. Constantine

UNLV Theses, Dissertations, Professional Papers, and Capstones

Music and language are easily distinguishable for the average listener despite sharing many structural acoustic similarities. The Speech-to-Song illusion can give rise to both musical and linguistic percepts by inducing a perceptual switch after listening to multiple repetitions of a natural spoken utterance. As such, it has been used as a tool to control for low-level acoustic characteristics previously shown to drive lateralized brain responses regardless of domain-type, helping to disambiguate the contribution of high- versus low-level processes in both music and speech perception. However, there exists a lack of research on how large a role individual differences such as …

Comparing Forgetting Rates Between Pattern Separation And Item Recognition, Rhiannon N. Soriano Smith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Recent theories of forgetting posit that hippocampally-based memory representations are more prone to be forgotten due to decay, while extra-hippocampal representations are more likely to be forgotten due to interference (Hardt, Nader, & Nadel, 2013; Sadeh & Pertzov, 2020). The current study examined this hypothesis by comparing the rate of forgetting between pattern separation, a hippocampally-based process, and item recognition, a process that is reliant on both hippocampal and extra-hippocampal structures. It was hypothesized that pattern separation would display more forgetting due to decay because it is a hippocampally-based process, while item recognition would display more forgetting due to interference …

The Coding Flexibility Of Radical Position In Chinese, Zian Chi

Electronic Thesis and Dissertation Repository

Although there are theories of word recognition/reading predicting a transposed letter (TL)-type effect in Chinese character recognition, specifically, a transposed radical (TR) effect, no empirical demonstrations of TR effects have been reported to this point. As a result, instead of adopting a position-general assumption of radical processing, a position-specific assumption of radical processing has been adopted in most Chinese character recognition models. In the present Experiment 1, computational models were created in order to determine whether models that do not make the position-general assumption can account for any TR effect if one were to be found. In Experiment 2, 3, …

Does Working Memory Predict Preference To Use Inherent Explanations In Scientific Observations? A Bayesian Item Response Theory Approach, Sepideh Namvarrad

Theses - ALL

Understanding the cognitive processes that help people generate explanations is one of the fundamental questions in cognitive science and philosophy. In this study, we try to examine the extent to which working memory capacity can predict peoples’ preference for scientific explanations under uncertainty. Specifically, we distinguish between possible explanations in terms of their focus on inherent vs. extrinsic entities associated with an observation. According to past findings, inherent vs. extrinsic properties of a phenomenon are different in terms of the ease of accessibility for cognitive processes. The results of this research indicate a significant association between people’s tendencies to choose …

Out Of The Body, Onto The Page: Awakening The Role Of The Body In Writing And Practical Applications Of Embodied Composition, Jasmine Jackson

All HCAS Student Capstones, Theses, and Dissertations

Academic writing courses privilege a style of learning that often excludes the awareness of the body. In this thesis, I propose an exploration of the role of the body as an active agent in the writing process. This thesis collates and queries research on embodiment to provide what a sample of embodiment theory and writing activities that facilitate embodiment in the classroom might look like by bringing in interdisciplinary studies to help fill the gap of research on embodied composition in the field.

In doing so this thesis argues in favor of an embodied approach to composition and is supported …

Changing Criteria: What Decision Processes Reveal About Confidence In Memory, Johanny N. Castillo

Masters Theses

Source memory is our ability to relate central information (the “item”) to the context (the “source”) in which it was learned or experienced. People are often highly confident in their source judgements even when this information is incorrectly recalled. Past work has aimed to explain why source errors made with high confidence occur with a framework called the Converging Criteria (CC) account. The CC account posits that item memory can interact with source memory by altering decision criteria as item confidence increases, increasing the probability of a high confidence source judgement. This prediction differs from alternate models, like the Fixed …

What Did You Expect? An Investigation Of Lexical Preactivation In Sentence Processing, Jon Burnsky

Doctoral Dissertations

Language users predictively preactivate lexical units that appear to the comprehen- der to be likely to surface. Despite ample language experience and grammatical competence, it appears that language users tend to preactivate verbs in some contexts, called role-reversal contexts, that would create plausibility violations if they were to actually appear; these verbs assign thematic roles to their arguments in such a way that it leads to implausibility. These anomalous predictions provide a window into the mechanisms underlying lexical preactivation and are the case study that this dissertation focuses in on. This dissertation is an exploration of what linguistic information is …

The Psychotherapeutic Effects Of Consumer-Grade Eeg Neurofeedback On Mental Health And Well-Being, Madeline Slack

Electronic Thesis and Dissertation Repository

The current study assessed whether pairing mindfulness meditation with consumer-grade neurofeedback (using Muse) would be a feasible and satisfying (i.e., fulfillment and pleasure) intervention for mental health and well-being. This was assessed via a four-day mindfulness program where participants (N=34) were assigned to mindfulness with neurofeedback (n=17) or guided meditation (control; n=17) group. On each day of the program, participants engaged in two mindful sessions (five minutes each) in the morning and afternoon. Participants were administered a series of affective measures before and after the program, as well as throughout. Upon completion, participants were asked to rate …

Dietary Fatty Acids And The Brain: Mechanisms Behind Neurodegeneration And Neuroprotection, Bianca Kdeiss

Loma Linda University Electronic Theses, Dissertations & Projects

The impact of dietary fat intake on cognitive function has generated growing interest as the incidence of neurodegenerative disorders continues to increase. No known cures for neurodegenerative disorders exist at this time and available pharmacological treatments are limited in their efficacy. As such, prevention and early detection have been emphasized, particularly in the context of modifiable lifestyle factors, such as diet. Despite a recognized association between dietary fat intake and cognition, limited research exists delineating the impact of different types of fat on cognitive function. In this review, research examining the association between cognition and specific dietary fatty acids—such as …

Virtual Reality Supplement To The Peers Social Skills Intervention For Adolescents With Asd, Kevin Ambrose

Dissertations, Theses, and Capstone Projects

The purpose of this study was to replicate findings of the Program for the Education and Enrichment of Relation Skills (PEERS) parent-assisted social skills training program for a diverse group of adolescents with historical autism spectrum disorder (ASD) diagnoses in an urban locality. Additionally, this study sought to pilot a 3D multi-user virtual environment for adolescent participants and an online learning community for parent coaches; both hypothesized to reinforce the social skills curriculum. A randomized controlled trial of PEERS was completed with 12 adolescents diagnosed with ASD with some participation from their caregivers. Results show that participants who received the …

Unexpected Arousal Suppresses Memory And Metamemory Predictions During Associative Face-Name Recognition Task, Sameer Sabharwal-Siddiqi

Dissertations, Theses, and Capstone Projects

Successful recognition often depends on probabilistic estimation of memory-signal. Arousal has been shown to offset the influence of heuristic evidence on memory prediction. We conducted three experiments that tested whether arousal also suppresses predictions relevant to memory confidence. Experiments employed associative face-name memory tasks that included retrospective (Experiments 1 and 2) or concurrent (Experiment 3) judgements of confidence. During test, subjects were presented with a masked-affective face on a subset of trials. By timing the masked-affective face to precede a recognition judgement (Experiment 1), we replicated the finding that unexpected arousal offsets the influence of heuristic evidence on expectations of …

Linguistic Abstractions In Children’S Very Early Utterances, Qihui Xu

Dissertations, Theses, and Capstone Projects

How early do children produce multiword utterances? Do children's early utterances reflect abstract syntactic knowledge or are they the result of data-driven learning? We examine this issue through corpus analysis, computational modeling, and adult simulation experiments. Chapter 1 investigates when children start producing multiword utterances; we use corpora to establish the development of multiword utterances and a probabilistic computational model to account for the quantitative change of early multiword utterances. We find that multiword utterances of different lengths appear early in acquisition and increase together, and the length growth pattern can be viewed as a probabilistic and dynamic process.

Chapter …

Retrieval Practice Promotes Learning Of Turkish As A Foreign Language: A Computer-Assisted Language Learning Study, Maya C. Rose

Dissertations, Theses, and Capstone Projects

Adults generally find it difficult to learn a new language, yet exhibit remarkable individual differences in outcomes. Variation in second language (L2) learning is associated with input conditions (Morgan-Short et al., 2010) as well as learners’ aptitude (Dörnyei, 2005). Recent work has demonstrated benefits of retrieval practice in promoting L2 learning of grammatical patterns and vocabulary in both artificial and natural languages (Hopman & MacDonald, 2018; Keppenne et al., 2021). With that said, when retrieval practice is based on oral recall as opposed to a recognition test, it confounds potential benefits of repeated testing (Rowland, 2014) with those associated with …

Neuroanatomy In Mild Cognitive Impairment: Relationship To Functional Skills, Treatment Expectancy, And Comorbid Depression, Sara Rushia

Dissertations, Theses, and Capstone Projects

Mild cognitive impairment (MCI) is a neurocognitive disorder defined by cognitive decline in older adults. Although MCI has been studied for decades, there remain important areas to be explored in order to adequately characterize aspects of this disorder that provide information valuable for possible interventions and disease progression to dementia, including a better understanding of the neuroanatomical variables relevant to this disorder. Such neuroanatomical variables include cortical thickness, hippocampal volume, and white matter hyperintensities (WMHs). This dissertation consists of three separate studies aimed at addressing gaps in the literature on MCI in relation to brain morphometrics and under-studied characteristics involved …

Narratives Close The Gap: The Limited Role Of Temporal Distance In Binding Events Into Coherent Memories, Angelique Delarazan

Arts & Sciences Electronic Theses and Dissertations

Temporal information has been identified as a powerful influence on memory retrieval. Much of this arise from studies that tend to focus on associations between items. In contrast, real-life experiences consist of discrete events that encompass more than mere associations. While events can be remembered based on temporal proximity, events that are farther apart in time can also be linked together by forming a coherent narrative. Given that daily experiences are multifaceted, it is unclear to what extent prior work generalizes to real-world memories. Here, we sought to determine the influence of temporal features and narrative coherence on memory for …

Role Of The Default-Mode Network During Narrative Integration In Major Depressive Disorder, Darren Ri-Sheng Liang

Electronic Thesis and Dissertation Repository

How brain activity is synchronized across individuals during narrative comprehension has previously been characterized by functional magnetic resonance imaging (fMRI) in healthy and patient populations. To our knowledge, there has been limited investigation as to how it is affected by major depressive disorder (MDD). We addressed this issue with fMRI through examination of inter-subject synchronization in the default mode network (DMN), brain structures which have previously been implicated in MDD pathology. Twenty-two patients with MDD and 20 matched control participants listened to Intact versus Scrambled versions of an auditory narrative; these experimental conditions differed in the degree of temporal integration …

The Spacing Effect In Remote Information-Integration Category Learning, Anthony Cruz

Electronic Thesis and Dissertation Repository

The present study examined whether the temporal distribution of procedural category learning experiences would impact learning outcomes. Participants completed the remote category learning study on a smartphone in one of two learning conditions: Massed (control) or distributed. Consistent with expectations, distributed learners reached higher accuracy levels. This effect disappeared after accounting for reaction time differences, suggesting that it was driven by attentional mechanisms. Distribution may have made participants more likely discover the optimal categorization strategy and more robust to sensory habituation. Counter to previous findings, participants favored distributed learning. These results suggest that adult category learning is facilitated by temporal …

Toddler Characteristics And Attention, Lani A. Taylor

Research Psychology Theses

Abstract

Individual differences have become increasingly relevant when addressing variability across child development. Literature bears evidence that these differences may impact a toddler’s ability to respond to Joint Attention (JA). JA refers to a communicative gaze and pointing between a child and another individual. JA has been recognized as being a critical milestone, to the formation and cultivation of shared awareness and attention of an event or object. JA is a skill that is critical to the development of future language acquisition (Vaughan Van Hecke et al., 2007). The aim of this study is to measure whether child characteristics, such …