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Full-Text Articles in Psychology
Validation Of The Barkley Deficits Of Executive Functioning Scale-Short Form, Brian Sheble
Validation Of The Barkley Deficits Of Executive Functioning Scale-Short Form, Brian Sheble
Dissertations
The Barkley Deficits of Executive Functioning-Short Form (BDEFS-SF) is a short rating scale measuring executive functioning in adults. The BDEFS-SF was developed using the 5 highest loading questions from the BDEFS-LF. Consequently, the psychometric qualities of the BDEFS-SF were not investigated using formal methods. In this study, the psychometric attributes of the BDEFS-SF were examined using two separate but similar groups. The first group of 264 men and women aged 18-35 years old completed the BDEFS-SF via an internet survey. The second group of 36 men and women aged 18-35 years old completed the BDEFS-SF and individualized assessments of executive …
Genetic Risk For Increased Oxidative Stress In The Aging Brain:Implications For White Matter Integrity And Cognition, Lauren Salminen
Genetic Risk For Increased Oxidative Stress In The Aging Brain:Implications For White Matter Integrity And Cognition, Lauren Salminen
Dissertations
Oxidative stress is a key mechanism of the aging process that can cause damage to brain white matter and cognitive functions. Allele variations of two polymorphisms (SOD2, CAT -262) have been associated with abnormalities in antioxidant enzyme activity, suggesting a risk for enhanced oxidative damage to brain white matter and cognition among older individuals with these genetic mutations. The present study utilized diffusion tensor imaging (DTI) and neuropsychological assessment to compare differences in microstructural white matter integrity and cognitive performance among 96 older adults (age 50-85) with and without genetic risk factors of SOD2 (rs4880) and CAT -262 (rs1001179). Results …
Diffusion Tensor Imaging And Neuropsychological Performance In Insulin Resistant Individuals, Elizabeth M. Lane
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 …