Open Access. Powered by Scholars. Published by Universities.®

Quantitative Psychology Commons

Open Access. Powered by Scholars. Published by Universities.®

773 Full-Text Articles 1,017 Authors 659,514 Downloads 110 Institutions

All Articles in Quantitative Psychology

Faceted Search

773 full-text articles. Page 33 of 34.

Women’S Decision Making: A Contextual Assessment, Safdar Khan 2010 Bond University

Women’S Decision Making: A Contextual Assessment, Safdar Khan

Safdar Khan

No abstract provided.


Neurochemical Effects Of Amyloid-Beta Oligomers In Rats, John J. Panos 2010 Western Michigan University

Neurochemical Effects Of Amyloid-Beta Oligomers In Rats, John J. Panos

Dissertations

Alzheimer’s disease is a progressive neurodegenerative disease characterized by memory loss and cognitive decline. Although the symptomology of Alzheimer’s disease is well defined, its precise etiology remains elusive. Animal models are invaluable for understanding the pathogenesis of this devastating disease. Knowledge of the neurochemical actions of amyloid-β oligomers in specific brain structures is essential for validating animal models of Alzheimer’s disease and for determining the most appropriate behavioral assays of memory. The specific aim of this project was to investigate the neurochemical effects of direct intracerebral infusion of amyloid-β oligomers in the rat. Experiment 1 investigated direct infusions of synthetic …


The Effects Of Self-Monitoring On Homework Completion And Accuracy Rates Of Students With Disabilities In An Inclusive General Education Classroom, Carol Ann Falkenberg 2010 Florida International University

The Effects Of Self-Monitoring On Homework Completion And Accuracy Rates Of Students With Disabilities In An Inclusive General Education Classroom, Carol Ann Falkenberg

FIU Electronic Theses and Dissertations

This study investigated the effects of self-monitoring on the homework completion and accuracy rates of four, fourth-grade students with disabilities in an inclusive general education classroom. A multiple baseline across subjects design was utilized to examine four dependent variables: completion of spelling homework, accuracy of spelling homework, completion of math homework, accuracy of math homework. Data were collected and analyzed during baseline, three phases of intervention, and maintenance. Throughout baseline and all phases, participants followed typical classroom procedures, brought their homework to school each day and gave it to the general education teacher. During Phase I of the intervention, participants …


Developing Constructs For Psychopathology Research: Research Domain Criteria, Charles A. Sanislow, Daniel S. Pine, Kevin J. Quinn, Michael J. Kozak, Marjorie A. Garvey, Robert K. Heinssen, Philip Sung-En Wang, Bruce N. Cuthbert 2010 Wesleyan University

Developing Constructs For Psychopathology Research: Research Domain Criteria, Charles A. Sanislow, Daniel S. Pine, Kevin J. Quinn, Michael J. Kozak, Marjorie A. Garvey, Robert K. Heinssen, Philip Sung-En Wang, Bruce N. Cuthbert

Charles A. Sanislow, Ph.D.

There exists a divide between findings from integrative neuroscience and clinical research focused on mechanisms of psychopathology. Specifically, a clear correspondence does not emerge between clusters of complex clinical symptoms and dysregulated neurobiological systems, with many apparent redundancies. For instance, many mental disorders involve multiple disruptions in putative mechanistic factors (e.g., excessive fear, deficient impulse control), and different disrupted mechanisms appear to play major roles in many disorders. The Research Domain Criteria (RDoC) framework is a heuristic to facilitate the incorporation of behavioral neuroscience in the study of psychopathology. Such integration might be achieved by shifting the central research focus …


The Statistical Properties Of The Survivor Interaction Contrast, Joseph W. Houpt, James T. Townsend 2010 Wright State University - Main Campus

The Statistical Properties Of The Survivor Interaction Contrast, Joseph W. Houpt, James T. Townsend

Psychology Faculty Publications

The Survivor Interaction Contrast (SIC) is a powerful tool for assessing the architecture and stopping rule of a model of mental processes. Despite its demonstrated utility, the methodology has lacked a method for statistical testing until now. In this paper we briefly describe the SIC then develop some basic statistical properties of the measure. These developments lead to a statistical test for rejecting certain classes of models based on the SIC. We verify these tests using simulated data, then demonstrate their use on data from a simple cognitive task.


The Statistical Properties Of The Survivor Interaction Contrast, Joseph W. Houpt, James T. Townsend 2010 Wright State University - Main Campus

The Statistical Properties Of The Survivor Interaction Contrast, Joseph W. Houpt, James T. Townsend

Joseph W. Houpt

The Survivor Interaction Contrast (SIC) is a powerful tool for assessing the architecture and stopping rule of a model of mental processes. Despite its demonstrated utility, the methodology has lacked a method for statistical testing until now. In this paper we briefly describe the SIC then develop some basic statistical properties of the measure. These developments lead to a statistical test for rejecting certain classes of models based on the SIC. We verify these tests using simulated data, then demonstrate their use on data from a simple cognitive task.


The Covariance Sign Of Transformed Random Variables With Applications To Economics And Finance, Martin Egozcue 2010 Universidad de la Republica Oriental del Uruguay

The Covariance Sign Of Transformed Random Variables With Applications To Economics And Finance, Martin Egozcue

Martin Egozcue

No abstract provided.


Psychometric Characteristics And Clinical Correlates Of Neo-Pi-R Fearless Dominance And Impulsive Antisociality In The Collaborative Longitudinal Personality Disorders Study, Edward A. Witt, Christopher J. Hopwood, Leslie C. Morey, John C. Markowitz, Thomas H. McGlashan, Carlos M. Grilo, Charles A. Sanislow, M. Tracie Shea, Andrew E. Skodol, John G. Gunderson, M. Brent Donnellan 2010 Michigan State University

Psychometric Characteristics And Clinical Correlates Of Neo-Pi-R Fearless Dominance And Impulsive Antisociality In The Collaborative Longitudinal Personality Disorders Study, Edward A. Witt, Christopher J. Hopwood, Leslie C. Morey, John C. Markowitz, Thomas H. Mcglashan, Carlos M. Grilo, Charles A. Sanislow, M. Tracie Shea, Andrew E. Skodol, John G. Gunderson, M. Brent Donnellan

Charles A. Sanislow, Ph.D.

This study evaluates the validity of derived measures of the psychopathic personality traits of Fearless Dominance and Impulsive Antisociality from the NEO Personality Inventory-Revised (NEO-PI-R; Costa & McCrae, 1992) using data from the Collaborative Longitudinal Personality Disorders Study (baseline N = 733). These 3 issues were examined: (a) the stability of the measures over a 10-year interval, (b) their criterion-related validity, and (c) their incremental validity relative to an alternative NEO-PI-R profile-rating approach for assessing psychopathy. NEO-PI-R Fearless Dominance and Impulsive Antisociality scales were relatively stable across 10 years and demonstrated differential associations with measures of personality pathology and psychopathology …


Prospect Theory, Indifference Curves, And Hedging Risks, Udo Broll, Martin Egozcue, Wing Keung Wong, Ricardas Zitikis 2010 Universidad de la Republica Oriental del Uruguay

Prospect Theory, Indifference Curves, And Hedging Risks, Udo Broll, Martin Egozcue, Wing Keung Wong, Ricardas Zitikis

Martin Egozcue

The prospect theory is one of the most popular decision-making theories. It is based on S-shaped utility functions, unlike the von Neumann and Morgenstern (NM) theory, which is based on concave utility functions. The S-shaped functions bring challenges, and extensions and generalizations of the NM theory into the prospect theory are not always possible. For example, in the prospect theory, the monotonicity of indifference curves depends on the underlying mean, unlike in the NM theory. Risk-hedging deci- sions also become more complex within the prospect theory. In this paper, we discuss these topics and establish general results concerning certain covariances …


A Study Of Individual Differences And Stress Among North American Musicians, Emmanuel Angel 2010 University of Pennsylvania

A Study Of Individual Differences And Stress Among North American Musicians, Emmanuel Angel

Publicly Accessible Penn Dissertations

An exploratory study using a web-based questionnaire collected 1,405 responses, primarily from musicians in the United States and Canada. Questionnaire items measured the Big Five dimensions of personality, psychosomatic health, sources of occupational stress, general demographic variables, and music related variables. A three-stage hierarchical clustering method assigned musicians to nine clusters based upon the Big Five dimensions of personality, forming a typology. Exploratory factor analysis of two item sets yielded latent variables for typal explication. The first analysis produced five group factors and one general factor for measuring occupational stress. The second analysis produced a unidimensional scale measuring psychosomatic troubles. …


Functional Principal Components Analysis And The Capacity Coefficient, D. Burns, Joseph W. Houpt, M. J. Endres, J. T. Townsend 2010 Wright State University - Main Campus

Functional Principal Components Analysis And The Capacity Coefficient, D. Burns, Joseph W. Houpt, M. J. Endres, J. T. Townsend

Joseph W. Houpt

The capacity coefficient is a well established measure of the efficiency of processing combined sources of information. It has been applied to measure cognitive processes ranging from audio-visual integration to face perception. Recently, the capacity coefficient has also been applied in various clinical situations. Typical clinical analysis, such as structural equation modeling, use scalar values or vectors with limited length as input. We explored the use of functional principal component analysis (fPCA) to allow researchers to describe the capacity coefficient, a continuous function of time, with a small set of discrete values. The fPCA approach was compared with two simple …


Using The Personality Assessment Inventory To Diagnose And Discriminate Between Major Depressive Disorder And Generalized Anxiety Disorder In A University Counseling Center, William Edward Nichelson III 2010 University of Tennessee - Knoxville

Using The Personality Assessment Inventory To Diagnose And Discriminate Between Major Depressive Disorder And Generalized Anxiety Disorder In A University Counseling Center, William Edward Nichelson Iii

Doctoral Dissertations

This study investigated the utility of the Personality Assessment Inventory (PAI) for diagnosing and discriminating between Major Depressive Disorder (MDD) and Generalized Anxiety Disorder (GAD) with university counseling center clients. Participants were 1541 male and female students who received services at a student counseling center at a large university. Participants were classified as MDD, GAD, or Other Diagnosis (OD) based on the diagnosis determined by the treating clinician, and PAI profiles were compared between the three groups.

The PAI Structural Summary-Revised contains Diagnostic Consider Clusters (DCC) that were designed to identify PAI scales/subscales that are typically elevated or suppressed when …


Estimating Confidence Intervals For Eigenvalues In Exploratory Factor Analysis, Ross Larsen, Russell Warne 2010 Brigham Young University - Provo

Estimating Confidence Intervals For Eigenvalues In Exploratory Factor Analysis, Ross Larsen, Russell Warne

Russell T Warne

Exploratory factor analysis (EFA) has become a common procedure in educational and psychological research. In the course of performing an EFA, researchers often base the decision of how many factors to retain on the eigenvalues for the factors. However, many researchers do not realize that eigenvalues, like all sample statistics, are subject to sampling error, which means that confidence intervals (CIs) can be estimated for each eigenvalue. In the present article, we demonstrate two methods of estimating CIs for eigenvalues: one based on the mathematical properties of the central limit theorem, and the other based on bootstrapping. References to appropriate …


Improving Irt Parameter Estimates With Small Sample Sizes: Evaluating The Efficacy Of A New Data Augmentation Technique, Brett P. Foley 2010 University of Nebraska - Lincoln

Improving Irt Parameter Estimates With Small Sample Sizes: Evaluating The Efficacy Of A New Data Augmentation Technique, Brett P. Foley

Public Access Theses, Dissertations, and Student Research from the College of Education and Human Sciences

The 3PL model is a flexible and widely used tool in assessment. However, it suffers from limitations due to its need for large sample sizes. This study introduces and evaluates the efficacy of a new sample size augmentation technique called Duplicate, Erase, and Replace (DupER) Augmentation through a simulation study. Data are augmented using several variations of DupER Augmentation (based on different imputation methodologies, deletion rates, and duplication rates), analyzed in BILOG-MG 3, and results are compared to those obtained from analyzing the raw data. Additional manipulated variables include test length and sample size. Estimates are compared using seven different …


Socially Desirable Responding On The Mmpi -2, Mcmi-Iii, And Pai In A Substance Abuse Treatment Setting, James Brian Rutland 2010 Louisiana Tech University

Socially Desirable Responding On The Mmpi -2, Mcmi-Iii, And Pai In A Substance Abuse Treatment Setting, James Brian Rutland

Doctoral Dissertations

Objectively scored measures of psychopathology are increasingly relied upon to aid in the diagnosis of mental disorders and treatment planning, and three commonly used measures are the MMPI-2, MCMI-III, and PAI. A difficulty with such measures, however, is that response sets are subject to both intentional and unintentional distortion by examinees. Underreporting of psychopathology and attempts to present oneself in an overly favorable light can be particularly difficult to detect. Therefore, scales and other indices have been developed to identify underreporting and defensiveness. Paulhus (2002) has developed and refined a model for this phenomenon of underreporting, which he calls Socially …


What Is Method Variance And How Can We Cope With It? A Panel Discussion, Michael T. Brannick, David CHAN, James M. Conway, Charles E. Lance, Paul E. Spector 2010 University of South Florida

What Is Method Variance And How Can We Cope With It? A Panel Discussion, Michael T. Brannick, David Chan, James M. Conway, Charles E. Lance, Paul E. Spector

Research Collection School of Social Sciences

A panel of experts describes the nature of, and remedies for, method variance. In an attempt to help the reader understand the nature of method variance, the authors describe their experiences with method variance both on the giving and the receiving ends of the editorial review process, as well as their interpretation of other reviewers’ comments. They then describe methods of data analysis and research design, which have been used for detecting and eliminating the effects of method variance. Most methods have some utility, but none prevent the researcher from making faulty inferences. The authors conclude with suggestions for resolving …


Segregation And Integration: A Study Of The Behaviors Of Investors With Extended Value Functions, Martin Egozcue, Wing Keung Wong 2010 Universidad de la Republica Oriental del Uruguay

Segregation And Integration: A Study Of The Behaviors Of Investors With Extended Value Functions, Martin Egozcue, Wing Keung Wong

Martin Egozcue

This paper extends prospect theory, mental accounting, and the hedonic editing model by developing an analytical theory to explain the behavior of investors with extended value functions in segregating or integrating multiple outcomes when evaluating mental accounting.


Gruss Type Bounds For The Covariance Of Transformed Random Variables, Martin Egozcue, Luis Fuentes García, Wing Keung Wong, Ricardas Zitikis 2010 Universidad de la Republica Oriental del Uruguay

Gruss Type Bounds For The Covariance Of Transformed Random Variables, Martin Egozcue, Luis Fuentes García, Wing Keung Wong, Ricardas Zitikis

Martin Egozcue

No abstract provided.


Gains From Diversification On Convex Combinations: A Majorization And Stochastic Dominance Approach, Martin Egozcue, Wing Keung Wong 2010 Universidad de la Republica Oriental del Uruguay

Gains From Diversification On Convex Combinations: A Majorization And Stochastic Dominance Approach, Martin Egozcue, Wing Keung Wong

Martin Egozcue

By incorporating both majorization theory and stochastic dominance theory, this paper presents a gen- eral theory and a unifying framework for determining the diversification preferences of risk-averse inves- tors and conditions under which they would unanimously judge a particular asset to be superior. In particular, we develop a theory for comparing the preferences of different convex combinations of assets that characterize a portfolio to give higher expected utility by second-order stochastic dominance. Our findings also provide an additional methodology for determining the second-order stochastic dominance efficient set.


Validating Kreiner And Ashforth’S Organizational Identification Measure In An Engineering Context, Morrie Mullins, Christian M. End, L. Carlin 2010 Xavier University - Cincinnati

Validating Kreiner And Ashforth’S Organizational Identification Measure In An Engineering Context, Morrie Mullins, Christian M. End, L. Carlin

Faculty Scholarship

No abstract provided.


Digital Commons powered by bepress