Social and Behavioral Sciences Commons^™

Assessing The Correlation Between The Socioeconomic Level And Cognitive Function Among Older Adults In Egypt, Macy Abougabal

Theses and Dissertations

The number of older adults is increasing worldwide at an unprecedented rate. Some countries began to understand the challenges of aging, while others are still at the stage of comprehending the true dimensions of the situation. There is a global focus on aging research to appropriately mitigate the negative impact of aging and cognitive decline. Not only that dementia add economic pressure on governments, it also increase the psychological and physical burden of the caregivers. Scholars have previously studied socioeconomic level in three variables, namely work, education, and income, and their relationship with cognitive function. It was concluded that the …

Does Anxiety Sensitivity Mediate Age-Related Differences In Anxiety In Middle-Aged And Older Adults?, Katherine F. Peterson

Theses and Dissertations

Anxiety is a mental illness that can have significant deleterious impacts on an individual’s functioning. Although anxiety has been studied in older adults, there is conflicting evidence on differences in anxiety as a function of age. Anxiety sensitivity is a construct that is positively related to anxiety but has limited research in older adults. Extant literature suggests that older adults experience less anxiety sensitivity than do younger adults. According to Socioemotional Selectivity Theory, this may be due to older adults letting go of the things that make them anxious. The current study proposed that age impacts self-rated anxiety such that …

Examining The Mental Health Of Older Hispanic/Latino Adults: Relationship Between Psycho-Social-Cultural Factors And Depressive Symptomatology, Anna Prado

Theses and Dissertations

The most prevalent disorders affecting the older adult population worldwide are dementia and depression. Ethnic minorities are disproportionately more likely to be affected by these two distressing and debilitating conditions. Hispanic/Latino older adults encounter numerous psycho-social-cultural factors that influence health behaviors, attitudes, and beliefs in positive and negative ways. Presently, research on the influence of these factors on Hispanic/Latino mental health is highly inconsistent. The purpose of the present study is to examine the relationship between selected psycho-social-cultural factors and the mental health of older Hispanic/Latino adults. Using data from the Health and Retirement Study, the association between the Hispanic/Latino …

Psychological Sense Of Community Among Older Adults In Puerto Rico Two Years After Hurricane María, Thomas D. Buckley

Theses and Dissertations

Hurricane María devastated Puerto Rico in 2017 and resulted in adverse long-term outcomes. Psychological sense of community (PSOC) may serve as a protective factor against the effects of Hurricane María for older adults in Puerto Rico. Using a three-paper format, this dissertation draws on a resilience framework and theories of PSOC and the Ecological Theory of Aging to examine the role of PSOC among older adults in Puerto Rico two years after Hurricane María.

Paper one is a scoping review of the concept of PSOC in research with community dwelling older adults. I begin by presenting findings on study characteristics …

Memory-Based Viewing: A Potential Marker Of Pathological Aging, Jenna Blujus

Theses and Dissertations

Markers of cognitive impairment are needed to distinguish normal from pathological aging prior to the onset of clinical symptomology to improve Alzheimer’s disease (AD) treatment or prevention efforts. AD pathology is believed to develop years or even decades prior to diagnosis in medial temporal lobe subregions that provide input to the hippocampus (Braak & Braak, 1991), disrupting the ability of the hippocampus to bind individual elements of an experience to form cohesive memory representations. Eye movement behavior is a sensitive index of learning and effects of memory on eye movements have been shown to emerge rapidly (within 500-750ms of stimuli …

Memory-Based Viewing: A Potential Marker Of Pathological Aging, Jenna Blujus

Theses and Dissertations

Markers of cognitive impairment are needed to distinguish normal from pathological aging prior to the onset of clinical symptomology to improve Alzheimer’s disease (AD) treatment or prevention efforts. AD pathology is believed to develop years or even decades prior to diagnosis in medial temporal lobe subregions that provide input to the hippocampus (Braak & Braak, 1991), disrupting the ability of the hippocampus to bind individual elements of an experience to form cohesive memory representations. Eye movement behavior is a sensitive index of learning and effects of memory on eye movements have been shown to emerge rapidly (within 500-750ms of stimuli …

From Sunrise To Sunset: A Lifespan Approach To Understanding The Mental Health Of A Subset Of American Farmers, Janna L. Imel

Theses and Dissertations

Prior research has indicated higher risk of suicide for farmers and identified depression and anxiety as mental health concerns, though the majority of research was conducted in the 1980s-1990s. In today’s economic, social, and political climate, farmers are exposed to situations and stressors reminiscent of the 1980s Farm Crisis. An added risk is the aging workforce of farmers, as age-related conditions can make farming even riskier. This study investigated the mental health of a subset of American farmers by exploring farm-related stressors, coping mechanisms, and mental health outcomes. Dispositional mindfulness was explored as a specific coping mechanism. Participants (N …

Loneliness And Sleep Disturbance In Older Americans, Sarah C. Griffin

Theses and Dissertations

Loneliness is a risk factor for premature mortality but the mechanics of this relationship remain obscure. A potential mechanism is sleep disturbance. The present study aimed to examine the association between loneliness and sleep disturbance, evaluate loneliness as a risk factor for sleep disturbance and vice-versa, model effects between loneliness and sleep disturbance over time, and evaluate a mediation model of loneliness, sleep disturbance, and health. Data came from the 2006-2012 waves of the Health and Retirement Study, a nationally-representative study of older Americans; participants > 65 were included (n=11,400). Analyses included (i) linear regressions accounting for complex sampling and (ii) …

Assessing Working Memory In Mild Cognitive Impairment With Serial Order Recall, Sheina Emrani

Theses and Dissertations

Background: Working memory (WM) is often assessed with serial order tests such as repeating digits backward. In prior dementia research using the Backward Digit Span subtest (BDT) only aggregate test performance was examined. The current research tallied primacy/ recency effects; out-of-sequence transposition errors; perseverations and omissions to assess WM deficits in patients with mild cognitive impairment (MCI). Methods: Memory clinic patients (n= 66) were classified into three groups - single domain amnestic MCI (aMCI), combined mixed domain/ dysexecutive MCI (mixed/dys MCI), and non-MCI where patients did not meet criteria for MCI. Serial order/ WM ability was assessed by …

An Examination Of A Mindfulness-Based Intervention For Older Adults, Morgan Levy

Theses and Dissertations

Mindfulness-based interventions use meditation and other learning exercises to help individuals become more aware of their current physiological and emotional experiences. Benefits of practicing mindfulness include an increase in positive psychological outcomes (e.g., psychological well-being, emotion regulation) and a decrease in negative psychological outcomes (e.g., anxiety, depression). The vast majority of studies focus on younger rather than older adults—setting the stage for the current study, which involved delivering a five-session mindfulness-based intervention to older adults (i.e., 60 and older). The smaller literature focused on older adults is promising but generally lacks methodological rigor (e.g., lack of no-treatment control groups). The …

Discrimination, Mental Health, And Preparedness For Aging In Trans(Gender)/Gender-Nonconforming Adults, Richard S. Henry

Theses and Dissertations

This cross-sectional study examined relationships among discrimination, mental health (i.e., depression and anxiety), preparation for aging (i.e., familiarity and planning), social support, death attitudes, and aging anxiety among TGNC adults (N = 154). Neither discrimination nor mental health predicted preparation for aging familiarity or planning. Discrimination did, however, predict both anxiety and depression, although only the non-affirmation subscale was a unique predictor of both. As discrimination and mental health were not a significant predictor of preparedness for aging in the previous regressions, the hypothesized mediation model and subsequent moderated mediation models were not conducted. Additional exploratory multiple regressions were …

Rescuing Age-Related Proteolysis Deficits With Methylene Blue, Shane E. Pullins

Theses and Dissertations

The average lifespan is constantly increasing with the advent of new medical techniques, and age-related cognitive decline is becoming a prevalent societal issue. Even during healthy aging, humans and rats exhibit progressive deficits in episodic/declarative memory. In laboratory rats, age-related memory impairment can be assessed with trace fear conditioning (TFC). Recent research implicates ubiquitin proteasome system-mediated protein degradation in the synaptic plasticity supporting memory formation and retrieval. In rats, aging leads to decreased basal proteolytic activity in brain structures known to support the acquisition and retrieval of trace fear memories, and our preliminary data suggests activity-dependent proteasome activity declines in …

Association Between Latent Toxoplasma Gondii Infection And Alzheimer's Disease, Cynthia Elizabeth Wyman

Theses and Dissertations

Introduction: Many studies have found an association between Toxoplasma gondii seropositivity and behavioral and cognitive changes in animal models and in humans. In addition, early findings have suggested an association between T. gondii seropositivity and Alzheimer's disease (AD). We sought to determine whether there is an association between T. gondii seropositivity and AD as well as cognitive functioning (including memory, working memory, processing speed, language functioning, executive functioning) in a large, well-characterized sample of subjects with AD and matched controls without dementia. Method: Using ELISA assays, we determined anti-T. gondii IgG antibody titers in 114 control subjects and in 105 …

Association Between Latent Toxoplasma Gondii Infection And Alzheimer's Disease, Cynthia Elizabeth Wyman

Theses and Dissertations

Introduction: Many studies have found an association between Toxoplasma gondii seropositivity and behavioral and cognitive changes in animal models and in humans. In addition, early findings have suggested an association between T. gondii seropositivity and Alzheimer's disease (AD). We sought to determine whether there is an association between T. gondii seropositivity and AD as well as cognitive functioning (including memory, working memory, processing speed, language functioning, executive functioning) in a large, well-characterized sample of subjects with AD and matched controls without dementia. Method: Using ELISA assays, we determined anti-T. gondii IgG antibody titers in 114 control subjects and in …

Apoaequorin Differentially Modulates Fear Conditioning In Adult And Aged Rats, Vanessa Ehlers

Theses and Dissertations

Normal aging is associated with a number of changes in behavioral and cellular function, and is often linked to increased susceptibility to cognitive impairment. The hippocampus has been widely implicated in learning and memory, and many forms of learning that are hippocampus-dependent (e.g. trace fear conditioning) are impaired in aged animals. A proposed contributor to aging-related cognitive impairment is aging-related calcium (Ca2+) dysregulation. This dysregulation is thought to result from changes in specific Ca2+-regulatory mechanisms, including abnormal Ca2+ ion channel activity or expression, as well as reduced Ca2+-binding protein (CaBP) expression, which is associated with cognitive and synaptic impairment. Previous …

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 …

Mindfulness And Cognitive Aging, Elise J. Herndon

Theses and Dissertations

Mindfulness meditation involves the cultivation of a focused, pre-conceptual consciousness that enables increased present-centered awareness of internal states, cognitive processes, and external stimuli (Mikulas, 2011; Kornfield, 2010). Studies suggest that mindfulness practice affects the brain structures and cognitive processes related to fluid intelligence, and may affect fluid intelligence itself among highly experienced practitioners (e.g., Gard, Taquet, et al., 2014; Lazar et al., 2005; Ritskes et al., 2003). Fluid intelligence includes higher-order reasoning and problem-solving abilities that are independent of cultural and environmental influences. These abilities peak in young adulthood, then begin to decay (Cattell, 1987; Goldberg, 2005).

The current study …

Resilience In Parkinson’S Disease: An Empirical Examination Of Age-Related Components Of The Construct, Andrea Garroway

Theses and Dissertations

Although Parkinson’s disease (PD) is commonly characterized by motor symptoms and physical limitations, there is growing recognition of nonmotor and mood symptoms associated with the disease as well. There has been limited research exploring how individual coping might affect the relationships between PD symptoms and mental health outcomes. The resilience construct was originally developed within the child literature, and it is often used in conceptualizing how people have adaptive or positive outcomes when facing adversity. Current resilience measures may not adequately assess the construct within an older population, however, given the unique emotion regulation and coping skills seen in late …

Age Differences In Long-Term Adjustment And Psychosocial Outcomes In A Large Multi-Site Sample 5-10 Years After Heart Transplant, Andrea Shamaskin

Theses and Dissertations

Research on age differences in heart transplant patients has focused primarily on medical outcomes, with mixed findings regarding mortality and morbidity rates and limited research regarding age differences in psychosocial and quality of life outcomes. To gain a more complete understanding of psychosocial adjustment after heart transplant, this study examined age differences in: satisfaction with quality of life, satisfaction with social support, depressive symptoms, negative affect, symptom distress, stress related to heart transplant, overall health functioning, coping strategies, and aspects of adherence. Results indicate that older patients, compared to younger patients, report better adjustment and quality of life across numerous …