Tracing Prospective Profiles of Juvenile Delinquency and Non-Delinquency: An Optimal Classification Tree Analysis Hideo Suzuki, Ph.D., Fred B. Bryant, Ph.D., and John D. Edwards, Ph.D. This study explored multiple variables that influence the development of juvenile delinquency. Two datasets of the National Youth Survey, a longitudinal study of delinquency and drug use among youths from … Continue reading Tracing Prospective Profiles of Juvenile Delinquency and Non-Delinquency: An Optimal Classification Tree Analysis

Automated CTA Software: Fundamental Concepts and Control Commands Robert C. Soltysik, M.S. and Paul R. Yarnold, Ph.D. Optimal Data Analysis, LLC Fundamental methodological concepts are reviewed, and automated CTA software commands are annotated. View journal article

How to Save the Binary Class Variable and Predicted Probability of Group Membership from Logistic Regression Analysis to an ASCII Space-Delimited File in SPSS 17 For Windows Fred B. Bryant, Ph.D. Loyola University, Chicago This note explains the steps involved and provides the SPSS syntax needed to run two-group logistic regression analysis using SPSS 17 … Continue reading How to Save the Binary Class Variable and Predicted Probability of Group Membership from Logistic Regression Analysis to an ASCII Space-Delimited File in SPSS 17 For Windows

An Internet-Based Intervention for Fibromyalgia Self-Management: Initial Design and Alpha Test William Collinge, Ph.D., Robert C. Soltysik, M.S., and Paul R.Yarnold, Ph.D. Collinge and Associates and Optimal Data Analysis, LLC Self-Monitoring And Review Tool, or SMART, is an interactive, internet-based, self-monitoring and feedback system, which helps people discover and monitor links between their own health-related … Continue reading An Internet-Based Intervention for Fibromyalgia Self-Management: Initial Design and Alpha Test

Junk Science, Test Validity, and the Uniform Guidelines for Personnel Selection Procedures: The Case of Melendez v. Illinois Bell Fred B. Bryant, Ph.D. and Elaine K.B. Siegel Loyola University Chicago and Hager & Siegel, P.C. This paper stems from a recent federal court case in which a standardized test of cognitive ability developed by AT&T, … Continue reading Junk Science, Test Validity, and the Uniform Guidelines for Personnel Selection Procedures: The Case of Melendez v. Illinois Bell