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An in depth evaluation of internal criteria for determining the number of clusters in a data set
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Clustering procedures partition data sets into groups, minimizing the distance within clusters while maximizing the distance between clusters. Clustering can be a powerful tool...
Associations between psychosis risk and emotional distress disorders with cortical surface morphometry
(University of Missouri--Columbia, 2020)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI-COLUMBIA AT REQUEST OF AUTHOR.] Neuroimaging studies have consistently found structural cortical abnormalities in schizophrenia, especially in structural hubs. However, it is unclear what...
Event-history mediator models of college attrition: risk goups and risk factors
(University of Missouri--Columbia, 2007)
estimated the effects of a number of factors on college attrition, in 3,290 FGEN and non-FGEN students over four years, using event-history analysis. Results showed that, FGEN students were indeed more likely to leave college than their non-FGEN peers...
Alcohol consumption, executive function and risky decision making
(University of Missouri--Columbia, 2009)
Previous research has shown that alcohol intoxication can adversely affect behavior by impairing higher cognitive function (e.g., Giancola, 2000) and can lead to increased risk-taking (Leigh, 1999) via impaired executive ...
Examining bidirectional associations between momentary impulsivity, alcohol consumption, and daily life contexts
(University of Missouri--Columbia, 2020)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] Longitudinal, cross sectional, and laboratory studies have examined the relationships between impulsivity and alcohol use. However, most studies so far have...
School-aged children's awareness of their own working memory contents
(University of Missouri--Columbia, 2018)
of estimating the number of items (k) an individual must have in mind based on their performance on some cognitive task. In the present research one such formula is used to obtain a typical estimate for a visual array task in which multiple colored squares must...
Ambulatory assessment of physical pain, emotional distress, and alcohol use
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The available research suggests that many individuals with chronic pain drink alcohol to manage their pain. However, few studies have examined the association of alcohol and pain...
Disentangling alcohol-specific alcohol use disorder criteria from externalizing psychopathology using an empirically driven approach
(University of Missouri--Columbia, 2020)
Within current mental disorder classification systems, alcohol use disorder (AUD) and psychopathology, more broadly, are conceptualized as distinct categorical disorders. Recent classification research has focused on ...
Broadening the perspective on employee absenteeism : the effects of work group and nonwork factors
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The present study examined employee absenteeism in relation to variables new to absenteeism literature while addressing several methodological issues highlighted...
A hierarchical Bayesian analysis of multiple order constraints in behavioral science
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Psychology is an empirical science, and oftentimes the main target of interest is an empirical effect. For example, we may be interested in human perception and ask participants...
The effects of tetrahydrobiopterin (BH4) treatement on nonverbal working memory-related brain activations and connectivity in individuals with phenylketonuria
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Previous research suggests that phenylketonuria (PKU) is associated with disruptions in structural and functional connectivity that may contribute to impairments in working...
Common and specific alcohol risk factors in African Americans and Caucasians
(University of Missouri--Columbia, 2010)
) completed an alcohol administration study, receiving a moderate dose of alcohol (0.72g/kg alcohol for males, 0.65g/kg for females). Acute alcohol response was measured at 8 time points (i.e., baseline, 15, 30, 45, 60, 90, 120, and 150 minutes...
Assessing single- and dual-process accounts of recognition memory using hierarchical Bayesian models
(University of Missouri--Columbia, 2010)
Recognition memory refers to a person's ability to recognize something that has been previously encountered. For several decades recognition memory has been thought to be governed by a single process whereby the strength ...
Freshmen college students with and without asthma : predictors of changes in smoking during the first semester
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Prior research has found that young adults with asthma are equally as likely or more likely to smoke cigarettes than their peers who do not have asthma, despite the potential...
Two brief treatments based on dialectical behavior therapy for binge eating across diagnoses and thresholds : results from a preliminary randomized dismantling study
(University of Missouri--Columbia, 2009)
How can disordered eating be effectively treated? The answer is not yet clear. Although cognitive behavioral therap (CBT) is generally considered the treatment of choice, disordered eating has been show to persist and ...
Maintaining cross-domain objects and features in working memory : implications for storage in models of working memory
(University of Missouri--Columbia, 2007)
A great deal of evidence, both from behavioral studies of cross-domain interference and from neuroimaging, suggests the need for a domain-general store in models of working memory. Baddeley included such a store in an ...
Predictors of polypharmacy and off-label prescribing of psychotropic medications : a national survey of child psychiatrists
(University of Missouri--Columbia, 2011)
-fitting, theoretically sound model predicting polypharmacy and off-label prescribing of medications included just one predictor variable: total number of diagnoses. These findings suggest that comorbidity is an important issue in the pharmacotherapy of children...
Gene-environment interaction in alcohol problems in emerging and young adulthood : the DRD4 VNTR, DAT1 VNTR, and 5-HTTLPR polymorphisms
(University of Missouri--Columbia, 2009)
Alcohol problems at different developmental stages are associated with different genetic and environmental factors. Taking a developmentally sensitive approach, the current study characterized interaction effects between ...
A transdiagnostic investigation of amygdala-vmPFC resting state functional connectivity and emotional distress in daily lives
(University of Missouri--Columbia, 2018)
Mood disorders, anxiety disorders and borderline personality disorder overlap in symptom criteria, are highly comorbid with one another, and group together in factor models of psychopathology (Kotov et al., 2011). These ...
Boundary conditions for a visual working memory capacity model
(University of Missouri--Columbia, 2009)
Cowan's K (Cowan, 2001) is an effective measure of visual working memory capacity and has been widely accepted by working memory researchers in recent years. However, one fundamental assumption of this measure, so called ...