Summary
Contents
Subject index
Quantitative Psychology is arguably one of the oldest disciplines within the field of psychology and nearly all psychologists are exposed to quantitative psychology in some form. While textbooks in statistics, research methods, and psychological measurement exist none offer a unified treatment of quantitative psychology. The SAGE Handbook of Quantitative Methods in Psychology does just that. Each chapter covers a methodological topic with equal attention paid to established theory and the challenges facing methodologists as they address new research questions using that particular methodology. The reader will come away from each chapter with a greater understanding of the methodology being addressed as well as an understanding of the directions for future developments within that methodological area.
Modeling Individual Change over Time
Modeling Individual Change over Time
Introduction
Researchers in psychology often ask questions about both individual change over time, and about how change is related to critical features of the developing individuals, such as the way they have been treated, their social and educational background, and so on. Despite decades in which it was believed that individual change could not be measured well (Cronbach and Furby, 1970), methodologists working within a variety of different disciplines have now developed a class of statistical methods that permit the effective investigation of individual change. These methods are referred to variously as individual growth modeling, random coefficient modeling, multilevel modeling, mixed modeling, and hierarchical linear modeling. All the new methods arose out of a common intellectual core ...
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