This book is unique in its focus on showing students in the behavioral sciences how to analyze longitudinal data using R software. The book focuses on application, making it practical and accessible to students in psychology, education, and related fields, who have a basic foundation in statistics. It provides explicit instructions in R computer programming throughout the book, showing students exactly how a specific analysis is carried out and how output is interpreted.

Jeffrey D. Long, PhD, is Professor of Psychiatry in the Carver College of Medicine at the University of Iowa. He is also the Head Statistician for Neurobiological Predictors of Huntington¿s Disease (PREDICT-HD), a longitudinal NIH-funded study of early detection of Huntington¿s Disease. His undergraduate degree is from the University of California at Los Angeles, and his doctoral degree is from the University of Southern California in the area of quantitative psychology.

About the Author
Preface
Chapter 1. Introduction
Chapter 2. Brief Introduction to R
Chapter 3. Data Structures and Longitudinal Analysis
Chapter 4. Graphing Longitudinal Data
Chapter 5. Introduction to Linear Mixed Effects Regression
Chapter 6. Overview of Maximum Likelihood Estimation
Chapter 7. Multimodel Inference and Akaike¿s Information Criterion
Chapter 8. Likelihood Ratio Test
Chapter 9. Selecting Time Predictors
Chapter 10. Selecting Random Effects
Chapter 11. Extending Linear Mixed Effects Regression
Chapter 12. Modeling Nonlinear Change
Chapter 13. Advanced Topics
Appendix: Soft Introduction to Matrix Algebra
References
Author Index
Subject Index