Cognitive Psychology Commons^™

Recognition Memory Revisited: An Aging And Electrophysiological Investigation, Elliot C. Jardin

ETD Archive

This study provides a better understanding of contributing factors to age differences in human episodic memory. A recurrent finding in recognition memory is that older adults tend to have lower overall accuracy and tend to make fewer false-alarm errors in judging new items, relative miss errors (Coyne, Allen & Wickens, 1986; Danziger, 1980; Poon and Fozard 1980). Two possible causes for decline in these abilities include an age-related decrement in speed of processing (Salthouse 1991) and changes in information processing ability due to entropy (Allen, Kaufman, Smitch, & Propper 1998a; Mallik et al., in preparation). Additionally, age differences may be …

Dynamic Balance Control And Segmental Orientation While Listening During Walking: Effects Of Age And Hearing Loss, Sin Tung Lau

Theses and Dissertations (Comprehensive)

Dynamic control of balance changes with age and changes with declines in sensory and cognitive abilities. For instance, emerging, yet robust associations between hearing loss and poor mobility have been described and yet the mechanism underlying these associations remains unknown. It could be that age-related declines in hearing ability result in different kinematic strategies when having to walk and listen at the same time (e.g. head and body orienting responses toward sounds) and/or that declines in hearing result in increased cognitive load during listening, at the detriment to mobility-related performance. Therefore, this thesis sought to better characterize these associations by …

Life-Long Creativity: Changing The Narrative Of Aging And Retirement, Jennifer K. Gippel Dr

Creativity and Change Leadership Graduate Student Master's Projects

The current narratives and stereotypes around retirement and aging are both inaccurate and incomplete. The popular media regularly portrays retirees and older citizens as blissfully happy but bland; or physically feeble and forgetful. Rarely are they portrayed as achievers and vibrant problem solvers. Instead they are perceived by policy makers as a problem to be solved. This project offers a different narrative ― one that presents retirement and aging as a unique time of creative opportunity, possibility, and freedom to choose. The primary outcome of the project is two chapters of a book entitled: Retirement by design: How to discover …

Impact Of Expressive Intensity And Stimulus Location On Emotion Detection, Brittany Nicole Groh

Masters Theses & Specialist Projects

Previous research demonstrates that the age of an observer, the peripheral location of a face stimulus on a display, and the intensity of the emotion expressed by the face all play a role in emotion perception. Older individuals have more difficulty identifying emotion in faces, especially at lower expressive intensities. The purpose of the current study was to understand how younger and older adults’ abilities to detect emotion in facial stimuli presented in the periphery would be affected by the intensity of the emotional expressions and the distance that the expressions are presented away from the center of the display. …

Age-Related Changes In Visual Spatial Performance, Samantha Farrell

Seton Hall University Dissertations and Theses (ETDs)

Visual spatial skills allow individuals to understand the relationship between objects, people, and the environment for their everyday activities. Visual spatial abilities incorporate visual, motor, and cognitive components, each of which changes across the lifespan. The current study examined the effects of age-related changes and practice type on visual spatial performance. Participants between 40 and 79 years of age were asked to complete the Block Design Task (BDT) by using nine blocks to recreate various designs. Both accuracy and latency were measured to examine these changes. Task difficulty and practice type were varied and cognitive abilities were measured via MMSE …

That Note Sounds Wrong! Age-Related Effects In Processing Of Musical Expectation, Andrea R. Halpern, Ioanna Zioga, Martin Shankleman, Job Lindsen, Marcus T. Pearce, Joydeep Bhattacharya

Faculty Journal Articles

Part of musical understanding and enjoyment stems from the ability to accurately predict what note (or one of a small set of notes) is likely to follow after hearing the first part of a melody. Selective violation of expectations can add to aesthetic response but radical or frequent violations are likely to be disliked or not comprehended. In this study we investigated whether a lifetime of exposure to music among untrained older adults would enhance their reaction to unexpected endings of unfamiliar melodies. Older and younger adults listened to melodies that had expected or unexpected ending notes, according to Western …

Intraindividual Variability As A Predictor Of Cognitive Decline In Elderly, Wendy S. Ramratan

Dissertations, Theses, and Capstone Projects

Mild cognitive impairment (MCI) is conceptualized as a transitional state between normal aging and fully developed clinical features of dementia. The literature on MCI is notable for varied measurement approaches and lack of stability in the diagnostic entity, with many individuals remaining stable or reverting to normal cognitive status. Researchers agree that multiple neuropsychological domains should be assessed to enhance the assessment and prediction of cognitive decline. In addition, within-person assessments capture trajectories of decline, which are better suited for understanding individual change than simple comparison to group norms. The current study investigated the ability of within-person change on novel …

Moderation Analysis Of Bowel Function Among Nutrients And Physical Function Or Depression, As Well As Whether Bowel Function Is Related To Cognition In Older Adults, Jessie Alwerdt

USF Tampa Graduate Theses and Dissertations

As we age, the risk for gut issues, such as smooth muscle tone, may be an underlying indirect or direct cause or risk factor for many age-related issues, such as frailty. Consequences of decreased motility and depleted epithelial barrier may result in nutrient deficiencies that may increase the risk for malnutrition (Brownie, 2006). Further, there is increasing evidence that there is a gut-brain-axis relationship that may influence cognition and mental health issues, such as depression and anxiety. While there are relationships established, the interconnections of these factors have yet to be fully understood.

This dissertation examined several relationships specific to …

Effects Of Age, Task Type, And Information Load On Discrimination Learning, Morgan E. Brown

Masters Theses & Specialist Projects

The feature positive effect (FPE) is a phenomenon in discrimination learning by which learning occurs more quickly when the presence (Feature positive; FP), rather than absence (Feature negative; FN) of a stimulus indicates a response should be made. Although the FPE has been extensively corroborated, a reversal, or feature negative effect (FNE), has been found when a target stimulus comes from a smaller set of stimuli (Fiedler, Eckert, & Poysiak, 1988). Age differences in FP and FN learning indicate that older adults perform more poorly than young adults on both FP and FN tasks, and are likely related to decline …

The Effect Of Emotional Faces On The Attentional Blink In Younger And Older Adults, Allison M. Sklenar

Masters Theses & Specialist Projects

The attentional blink occurs when detection of a second target (T2) is impaired when it occurs between 180 to 450 ms after the first target (T1) in a rapid serial visual presentation (RSVP). The attentional blink can be affected by relevant emotional stimuli, like emotional faces, such that an emotional T1 enhances the attentional blink, and an emotional T2 attenuates it. However, not all studies use the same type of face stimuli, and there is debate over whether schematic and photo-realistic faces are processed in the same way. Furthermore, the effect of emotion on the attentional blink should differ with …

Absolute Pitch In Naturalistic Singing: A Commentary On Olthof Et Al., Andrea R. Halpern

Faculty Journal Articles

The parent article looks at pitch stability in an archive of folksongs recorded over several decades. Some evidence for pitch stability was found. Here, I consider some additional aspects of the archive that could be examined, offer some extensions to relevant laboratory studies, and consider some inherent strengths and limitations of the naturalistic, archival approach.

Loneliness And Perceived Stigmatization Among Older Adults Enrolled In Opiate Substitution Treatment Programs And The Utilization Of Mental Health Services, Jennifer B. Armstrong

Antioch University Dissertations & Theses

Little research has examined the role that loneliness and perceived stigmatization play in the decision to seek mental health services among older adults enrolled in opiate substitution treatment. Researchers studying this at-risk population have called for more studies to examine services that can be implemented within current opiate substitution treatment settings. This study advances research in the field by utilizing standardized self-report measures to examine the relationship between loneliness, perceived stigmatization, and the impact of said variables on the utilization of available mental health services among older adults enrolled in opiate substitution treatment programs. Ninety-four 50-71-year-old adults from an opiate …

Accumulation Of Subcortical Iron As A Modifier Of Volumetric And Cognitive Decline In Healthy Aging: Two Longitudinal Studies, Ana Marie Daugherty

Wayne State University Dissertations

Accumulation of non-heme iron in the brain has been theorized as a cellular mechanism underlying global neural and cognitive decline in normal aging and neurodegenerative disease. Relatively few studies of brain iron in normal aging exist and extant studies are almost exclusively cross-sectional. Here, I estimated iron content via T2* and measured volumes in several brain regions in two independent samples of healthy adults. The first sample (N = 89) was measured twice with a two-year delay; and the second sample (N = 32) was assessed four times over a span of 7 years. Latent models estimated change in iron …

Changes In Cerebral White Matter, Vascular Risk And Cognition Across The Adult Lifespan, Andrew Robert Bender

Wayne State University Dissertations

Numerous studies over the past decade have used diffusion tensor imaging (DTI) to examine associations between age, diffusion and anisotropy measures of cerebral white matter (WM), and cognitive performance. However, few have examined relationships between intra-individual change in DTI measures of WM and cognitive function. It is possible that the extant cross-sectional findings are a poor representation of age-related change in WM and cognition. The present study used latent difference-score modeling (LDM) to assess change over two years in DTI indices fractional anisotropy (FA), radial diffusivity (DR), axial diffusivity (DA) and mean diffusivity (MD). In addition, we examined the effects …

The Neuropsychological Functioning Of Older Adults Pre- And Post-Cognitive Training With A Brain Plasticity-Based Computerized Training Program, Shannon M. Sorenson

Graduate Masters Theses

The present study evaluates the effectiveness of Posit Science Cortex™ with Insight Drive Sharp™ as a tool for improving neuropsychological functioning in a normal aging sample. The purpose of the DriveSharp™ training program is to help an individual improve his or her visual attention and useful field of view. Each exercise continually adapts to the individual’s performance so that the training is always at an appropriate level for that specific person. Thirty-two healthy older adult participants were randomly assigned to either the active intervention group (DriveSharp™) or a waitlist control group. Participants in the intervention group were required to engage …

Vantage Point And Visual Imagery: Effects On Recall In Younger And Older Adults, Allison J. Midden

Scripps Senior Theses

The current study explored the influence of priming vantage point at retrieval on the recall of younger and older adults, in addition to the effects of visualization ability on recall. Based on McIsaac and Eich’s (2002) findings of the effects on younger adults’ recall, it was hypothesized that recollections would be more likely to include certain features when retrieved through the field vantage point (FVP) than through the observer vantage point (OVP) and vice-versa. Additionally, it was expected that older adults would recall more detailed memories from the OVP than from the FVP. Finally, it was hypothesized that visualization ability …

Semantic Feature Distinctiveness And Frequency, Katherine Marie Lamb

USF Tampa Graduate Theses and Dissertations

Lexical access is the process in which basic components of meaning in language, the lexical entries (words) are activated. This activation is based on the organization and representational structure of the lexical entries. Semantic features of words, which are the prominent semantic characteristics of a word concept, provide important information because they mediate semantic access to words. An experiment was conducted to examine the importance of semantic feature distinctiveness and feature frequency in accessing the lexical representations of young and older adults in an off-line task using features of animals. The McRae, Cree, Seidenberg, and McNorgan (2005) feature norm corpus …

Prenatal Undernutrition And Cognitive Function In Late Adulthood, Susanne R. De Rooij, Hans Wouters, Julie E. Yonker, Rebecca C. Painter

University Faculty Publications and Creative Works

At the end of World War II, a severe 5-mo famine struck the cities in the western part of The Netherlands. At its peak, the rations dropped to as low as 400 calories per day. In 1972, cognitive performance in 19-y-old male conscripts was reported not to have been affected by exposure to the famine before birth. In the present study, we show that cognitive function in later life does seem affected by prenatal undernutrition. We found that at age 56 to 59, men and women exposed to famine during the early stage of gestation performed worse on a selective …

Examining Neurophysiological Evidence Of Age-Related Interactions Of Sensory And Cognitive Processes During Speech Processing, Cady Kristen Block

Psychology Theses & Dissertations

The present study sought to examine the contribution of sensory and cognitive factors on speech processing as evidenced by ERP measures and to find support for the Sensory Cognitive Interaction Theory (SCIT) and the Effortfulness Hypothesis in that older adults. who experience sensory deficits with normal aging. must put forth increased effort during early sensory stages of speech processing that may compromise subsequent semantic performance and recall of information. In the present investigation. younger and older adults performed a sentence verification task at low and high presentation levels (PL). Accuracy and response time to sentence verifications were assessed along with …