Social and Behavioral Sciences Commons^™

Using Latent Class Cluster Analysis To Identify And Profile Organizational Subclimates: An Exploratory Investigation Using Safety Climate As An Exemplar, Amy Frost Stevenson

Doctoral Dissertations

Organizational climate refers to the shared meaning organizational members attach to the events, policies, practices, and procedures they experience as well as to the behaviors they see being rewarded, supported, and expected (Schneider, Ehrhart, & Macey, 2011). Climate scholars have most frequently used referent-shift consensus and dispersion composition models (Chan, 1998) to conceptualize and measure organizational climate. Based on these models, climate emergence has been characterized by low variance or high consensus of individual-level climate perceptions (Chan, 1998; Ehrhart, Schneider, & Macey, 2013; Hazy & Ashley, 2011; Kuenzi & Schminke, 2009) within formally defined organizational groups (e.g., work teams).

Climate …

Evaluating Indicators Of Job Performance: Distributions And Types Of Analyses, Richard J. Chambers Ii

Doctoral Dissertations

Distributions of job performance indicators have historically been assumed to be normally distributed (Aguinis & O'Boyle, 2014; Schmidt & Hunter, 1983; Tiffin, 1947). Generally, any evidence to the contrary has been attributed to errors in the measurement of job performance (Murphy, 2008). A few researchers have been skeptical of this assumption (Micceri, 1989; Murphy, 1999; Saal, Downey, & Lahey, 1980); yet, only recently has research demonstrated that in certain specific situations job performance is exponentially distributed (Aguinis, O'Boyle, Gonzalez-Mulé, & Joo, 2016; O'Boyle & Aguinis, 2012). To date there have been few recommendations in the Industrial-Organizational Psychology literature about how …

Anxiolytic Effects Of Propranolol And Diphenoxylate On Mice And Automated Stretch-Attend Posture Analysis, Kevin Scott Holly

Doctoral Dissertations

The prevention of social anxiety, performance anxiety, and social phobia via the combination of two generic drugs, diphenoxylate HC1 (opioid) plus atropine sulfate (anticholinergic) and propranolol HCl (beta blocker) was evaluated in mice through behavioral studies. A patent published on a September 8, 2011 by Benjamin D. Holly, US 2011/0218215 Al, prompted the research. The drug combination of diphenoxylate and atropine plus propranolol could be an immediate treatment for patients suffering from acute phobic and social anxiety disorders. Demonstrating the anxiolytic effects of the treatment on mice would validate a mouse model for neuroscientist to be used to detect the …

The Relationship Between Executive Functioning And Substance Abuse, John M. Tracy

Doctoral Dissertations

Substance use disorders are a widespread issue in society today with approximately 20 million people in the U.S. alone experiencing drug-related problems (Substance Abuse and Mental Health Services Administration, 2012). However, treatment is often ineffectual with approximately 50% of addicted individuals returning to substance use. One factor found to impact individuals' treatment response is their neuropsychological functioning. Drug-abusers frequently exhibit severe executive functioning impairments across a number of domains, and there is evidence that these deficits may be time and substance-dependent. Executive functions are mental processes critical in motivation, planning, and goal-directed behaviors. With extended abstinence, research suggests cognitive improvements …

Personal Factors, Domain Specificity, And Risky Decision-Making, Rose Niles

Doctoral Dissertations

Adults make many risky decisions daily, such as choosing to drive over the speed limit or going outside without previously applying sunscreen. How and why adults make such decisions remains relatively unknown and has gained much research attention. Traditional models of decision-making, such as Expected Utility Theory (Bernoulli, 1954) and Prospect Theory (Kahneman & Tversky, 1972) have proven too simplistic, as they do not account for the regular deviations from expected decision-making processes. Likewise, models that attempt to categorize individuals as risk seeking and risk-averse do not hold up well when decisional-domain is examined (Blais & Weber, 2006). Contemporary research …

Chronotype Preference, Partial Sleep Deprivation, And Executive Functions Performance Throughout The Wake-Cycle, Devin Layne Merritt

Doctoral Dissertations

Sleep is vital to survival and well-being. Adequate sleep, which is conceptualized in terms of quantity and quality, is positively related to a number of cognitive functions. In terms of length, it has been recommended that individuals in late adolescence and adulthood should receive no less than eight hours of sleep. Negative effects on higher-order mental processes have been found in states of sleep deprivation. Individuals who experience total sleep deprivation show decrements in performance on tasks of executive function (i.e. sustained attention, planning, and decision making). However, the effects of partial sleep deprivation on executive functions has not been …

Factors Predicting Weight Loss And Weight Gain In Bariatric Surgery Patients, Deborah Potisek Simpson

Doctoral Dissertations

Obesity has become an epidemic in the United States that can result in problems in multiple areas of an individual's life. Bariatric surgery has been shown to be an effective weight loss treatment for obese and morbidly obese individuals; however, although many individuals obtain long-term weight loss success after surgery, there is a percentage of patients who do not obtain the expected weight loss or end up regaining the weight they had initially lost. In an attempt to identify those who may be at risk for poorer results after bariatric surgery, most surgeons require that an individual undergo a psychological …

Ptsd, Academic Achievement, And College Persistence: The Moderating Effects Of Coping Mechanisms And Social Support, Rebecca Granda

Doctoral Dissertations

Prevalence rates of lifetime exposure to trauma for college students range from 50 to 90% indicating that most college students begin the first year of college with a history of trauma. Previous studies suggest a significant negative relationship between posttraumatic stress disorder (PTSD) and college retention; however, these studies have mainly focused on the negative effects of trauma exposure and PTSD on college students' persistence. As a result, it was unknown whether the effects of PTSD on academic achievement and college persistence can be moderated by protective factors, such as coping skills and social support. The purpose of this study …

Personality Traits Related To Problematic Facebook Use, Shelley R. Visconte

Doctoral Dissertations

The American Psychiatric Association (APA) encouraged research in the area of Internet Gaming Disorder, by including it in the Conditions for Further Study section of the Diagnostic and Statistical Manual of Mental Disorders , 5th Edition (DSM-5; APA, 2013). The present study attempted to determine which personality traits were associated with problematic Facebook use, a subset of problematic Internet use. The Bergen Facebook Addiction Scale (BFAS), Narcissistic Personality Inventory-Sixteen (NPI-16), International Personality Item Pool (IPIP) items related to extraversion, IPIP items related to neuroticism, Internet Addiction Test (1AT), Facebook Intensity Scale (FBI), a demographic information form, and Exploratory Facebook Use …