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Quantitative Psychology

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Articles 31 - 35 of 35

Full-Text Articles in Psychology

Estimating Confidence Intervals For Eigenvalues In Exploratory Factor Analysis, Ross Larsen, Russell Warne Jul 2010

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 …


The Static-99 And Additional Research-Based Risk Factors : A Statistical Theory To Improve Sex Offender Risk Assessment, Jeffrey C. Sandler Jan 2010

The Static-99 And Additional Research-Based Risk Factors : A Statistical Theory To Improve Sex Offender Risk Assessment, Jeffrey C. Sandler

Legacy Theses & Dissertations (2009 - 2024)

Research has indicated that adjusting Static-99 risk assessments for sexual recidivism using unguided clinical opinion reduces the accuracy of the risk assessments. While progress has been made in the last decade toward identifying which variables (both internal and external to the Static-99) are associated with the likelihood of an offender sexually recidivating, very little guidance has been given on how to consider the variables external to the Static-99 within the context of a Static-99 risk assessment. The current study proposes a statistical theory for how to incorporate certain variables into such an assessment, and provides some preliminary analyses to support …


Faking: A Comparison Of Effective Methods, Devon Rachelle Fell Jan 2008

Faking: A Comparison Of Effective Methods, Devon Rachelle Fell

Theses Digitization Project

This experiment has been designed to investigate which methods of faking appear to be effective, and it compares the relative impact of dispositional and situational methods. This experiment tests the methods of sterotyping (dispositional), prior knowledge (dispositional), and coaching (situational) on the ability to fake an application for a sales job as measured by their scores on two dimensions of the International Personality Item Pool (IPIP) Five Factor Personality Inventory. A total of 271 students enrolled in at least one psychology course from California State University, San Bernardino, volunteered to participate in this experiment.


Factor Structure Of The Life Orientation Test And Life Orientation Test- Revised: The Influence Of Item Framing, Jamie Moore Jan 2008

Factor Structure Of The Life Orientation Test And Life Orientation Test- Revised: The Influence Of Item Framing, Jamie Moore

Theses : Honours

Historically psychological scales have used a mix of positively keyed and negatively keyed items (balanced scales) to control for the effects of response sets. While it has been established that the use of balanced scales does effectively control for response sets such as acquiescence, issues relating to the psychometric properties of these scales emerge. The following review investigated issues surrounding the reliability, validity and factor structure of balanced scales by considering whether these issues were caused by positively and negatively keyed items measuring different aspects of a construct or whether they emerged simply due to measurement error. Both these positions …


Reactions To Disability: An Empirical Investigation Of Their Nature And Structure, Hanoch Livneh, Richard F. Antonak Jan 1990

Reactions To Disability: An Empirical Investigation Of Their Nature And Structure, Hanoch Livneh, Richard F. Antonak

Counselor Education Faculty Publications and Presentations

This paper describes the initial steps toward the construction of an experimental, multidimensional inventory to measure reactions to physical disability. The Relations to Impairment and Disability Inventory (RIDI) was developed to provide information on eight patterns of psychosocial reactions to disability, namely: shock, anxiety, denial, depression, internalized anger, externalized hostility, acknowledgement and adjustment. Data are presented on initial psychometric analyses of the inventory. Analyses of the eight scales supported their homogeneity and relative independence, and the inventory's construct validity was partially documented. A moderately high degree of relationship was found between the Acknowledgement and Adjustment scales and the Acceptance of …