Digital Commons Network^™

The (B)Link Between Amotivation And Dopamine In Psychosis: What Phasic Eye Blink Rate Reveals, Jessica Elaina Mcgovern

LSU Doctoral Dissertations

Motivation deficits (i.e., avolition or amotivation) are a cardinal feature of schizophrenia spectrum disorders (SSDs) and are linked to worse functional outcomes. Accumulating evidence implicates underactive dopamine responses in reward areas of the brain (e.g., striatum) in the etiology of amotivation. Phasic dopamine firing in the striatum purportedly has a role in increasing the perceived value of a potential reward that, in effect, helps “push” the organism toward initiating and persisting in the action to pursue rewards. Previous research has suggested that eye blink rate (EBR) may be a reliable and valid index of striatal dopamine. Amotivation (clinician-rated and self-reported) …

A Randomized Controlled Trial Of A Hatha Yoga Intervention For Smokers, Emily Robin Jeffries

LSU Doctoral Dissertations

Despite well-documented negative effects of smoking, many individuals continue to smoke. Anxiety and depression are associated with poorer cessation outcomes. Three transdiagnostic factors may explain the anxiety/depression-smoking link: anxiety sensitivity (AS), distress tolerance (DT), anhedonia (Anh; Leventhal & Zvolensky, 2015). It therefore follows that changing AS, DT, and Anh could aid cessation efforts. Thus, the current study tested the efficacy of hatha yoga for reducing craving, smoking, AS, and Anh and increasing DT, and whether anxiety/depression moderates these relationships. Participants were 55 community-recruited smokers (62% male, 71% non-Hispanic White, M_age = 28.16) motivated to reduce or quit smoking. We …

Attentional Deployment, Cognitive Control, And Reappraisal In Schizophrenia, Kyle Robert Mitchell

LSU Doctoral Dissertations

Recent studies posit that deficits in emotion regulation may lead to increased negative emotional experience in schizophrenia. While individuals with schizophrenia evidence a number of abnormalities in emotion regulation, it is unclear whether these deficits are discrete or related; furthermore, the mechanisms underlying these deficits are not clear. Cognitive control has been posited as an important mechanism supporting emotion regulation. The current study examined the relationship between attentional deployment and both lexical and self-reported indices of reappraisal, as well as the mediating role of cognitive control on this relationship in a sample of 22 individuals with psychotic disorders. A novel …

Differential Effects Of Mindful Breathing And Loving-Kindness Meditation Exercises On College Students' Mental Health, Sarah J. Bolognino

LSU Doctoral Dissertations

Mindfulness and loving-kindness are two concepts with associated meditation exercises that have been evaluated as part of mindfulness-based treatment approaches (MBTAs) to improve mental health. A common MBTA, Mindfulness Based Stress Reduction (MBSR) includes multiple component exercises including mindful breathing meditation (MBM), and loving-kindness meditation (LKM). The purpose of the present study was to examine differential effects of MBM and LKM on the proposed process variables of social connectedness, cognitive fusion and experiential avoidance, present moment awareness, affect, and compassion for self and others, as well as across outcomes measures of general anxiety, social anxiety, depression, and wellbeing. Additionally the …

Examining The Sex Ratio In Autism Spectrum Disorder, Maya N. Matheis

LSU Doctoral Dissertations

The higher prevalence of autism spectrum disorder (ASD) among males compared to females is well documented but poorly understood. The ASD sex ratio may provide valuable insight into the underlying neurobiological mechanisms of the disorder. A review of studies examining the prevalence in ASD published in the last 5 years was conducted, revealing a mean male/female (M/F) ratio of 4. Literature examining the ASD sex ratio in relation to risk factors and associated features of ASD was also summarized. The study aimed to examine the ASD sex ratio and its association to various risk factors among an early intervention sample. …

Focality In Prospective Memory: A Thorough Examination Of Cue Specificity And Task-Appropriateness, Bethany Alice Lyon

LSU Doctoral Dissertations

Prospective memory (PM) refers to memory for future intentions (e.g. remembering to press a button when you see an animal word). Researchers classify PM intentions in the laboratory as focal or nonfocal primarily in two ways. One way, task-appropriateness, refers to how the processing for the intention relates to the processing required for an ongoing task; the PM intention and the ongoing task either match in processing (TAP; focal) or mismatch in processing (TIP; nonfocal). The second way researchers classify focality is based on cue specificity, with the PM task either being specific (focal) or general (nonfocal). Resolving this ambiguity …

Evaluating The Predictive Validity Of The Implementation Beliefs Assessment On Classwide Management Components, Sarah Alexa Metallo

LSU Doctoral Dissertations

Given the broad framework of the Positive Behavioral Interventions and Supports model, its barriers to adaptability and implementation in schools have affected an increased emphasis on exploration and measurement of treatment integrity. A tool directly linked with a model of treatment integrity is the Implementation Beliefs Assessment (IBA; Sanetti, Long, Neugebaur, & Kratochwill, 2012). The IBA has preliminary evidence indicating it is a psychometrically sound measure; however, since it is a measure related to behavior change, assessing its predictive validity of treatment integrity is a useful indicator of this tool’s value during the consultation process. The current study utilized multiple …

A Preliminary Examination Of The Time And Organization Preparation System-College (Tops-C) With Undergraduate Students, Ashley Elizabeth Bordelon

LSU Doctoral Dissertations

Many factors contribute to the educational success of undergraduate students, including personal beliefs, effort, and the ability to self-manage. Many students are not prepared for the rigors of post-secondary education. This need is particularly striking given the limited availability of manualized evidenced based interventions available to support college students with academic task demand management. This study sought to determine the efficacy of the Time and Organization Preparation System-College (TOPS-C), a program aimed to increase study skills, organization, self-regulated learning, and time management through direct instruction, group contingency, and performance feedback. To determine changes in skill level, students completed the Learning …

What Motivates Children To Respond? Functional Analysis And Intervention Of Math Computation Fluency, Catherine Rose Lark

LSU Doctoral Dissertations

An abundance of research exists supporting the use of functional analyses to assess and treat problem behavior. In contrast, little research has been conducted on the application of functional analysis (FA) procedures to academic behaviors. The current study attempted to fill this research gap by conducting an FA of academic responding for five elementary students with low math fluency. Sessions were conducted using both a traditional reinforcement schedule of a fixed ratio of one (FR-1) as well as a more practical reinforcement schedule of a fixed ratio of ten (FR-10) to examine the effects of the reinforcement schedule on the …

Development Of The Routines And Time Management Inventory For Young Adults, Morgan Ashwill Grinnell

LSU Doctoral Dissertations

Routines are observable and repetitive behavior patterns that are context specific and help to automate aspects of daily life (Sytsma, Kelley, & Wymer, 2001; Zisberg, Young, Schepp, & Zysberg, 2007). The presence of routines in an individual’s life promotes overall functioning, and irregular routines have been associated with poorer physical and psychological health (Margraf, Lavallee, Zhang, & Schneider, 2016). Time management skills, such as those required to plan, prioritize, and execute tasks are crucial to cultivating stable routines. Although measures of routines exist for children, adolescents, families, and older adults, the routines of younger adults have been neglected.

The purpose …

A Study Of The Lived Experience Of African American Males Who Transition From Out-Of-Home Care To Postsecondary Education, Marvin Cain Alexander

LSU Doctoral Dissertations

While the literature is replete with studies of the factors contributing to the failure and social deviance of African American males, few qualitative studies have been conducted to determine the factors that support the success of African American males, and virtually none have focused on the transition of African American males from out-of-home care to postsecondary educational institutions. Despite the challenges faced preceding and during out-of-home care, African American males can transition to postsecondary educational institutions. There is a need to understand why some African American males who experience out-of-home care can accomplish this while others cannot. It is imperative …

Personalized Normative Feedback For College Student Condom Use, Sonia Mahesh Shah

LSU Doctoral Dissertations

Personalized normative feedback (PNF) interventions provide corrective normative feedback and have been found to successfully elicit behavior change (e.g., related to alcohol consumption, gambling). There are no known PNF interventions that explicitly target risky sexual behavior (RSB). PNF interventions have demonstrated significant reductions on drinking outcomes and normative perceptions, highlighting the potential utility of a PNF intervention specifically for RSB. The current study tested the utility of a web-based PNF intervention to correct normative perceptions regarding condom use as well as to increase condom use among college students. A sample of 189 undergraduate students (80.6% female, 62.2% non-Hispanic Caucasian) who …