Longitudinal research (or observing the same subject across time) in human development requires more careful planning than do cross-sectional studies and is demanding theoretically and organizationally. This volume focuses on methods of data treatment in longitudinal research emphasizing the importance of careful matching of methodology to the substantive problem under consideration. It deals particularly with concepts of stability and change that are central to personality and developmental research. Contributors to this volume explore the methodology and scope of life span studies in a...

During the last decade there has been increased awareness of the limitations of standard approaches to the study of development. When the focus is on variables and relationships, the individual is easily lost.
This book describes an alternative, person-oriented approach in which the focus is on the individual as a functioning whole. The authors take as their theoretical starting points the holistic-interactionistic research paradigm expounded by David Magnusson and others, and the new developmental science in which connections and interactions between different systems (biological,...

Originally published in 1988, this title presents a longitudinal research project 'Individual Development and Adjustment' (IDA), planned and implemented at the Department of Psychology, University of Stockholm. This title concerns the theoretical background of the project, the planning and collecting of data during the second phase of the project when the participants had reached adulthood, and the presentation of some empirical, illustrative studies based on the collected data.

Research on physical maturity has demonstrated conclusively that the assumption of an age-homogenous development does not always hold true. This volume presents a biosocial model focusing on the role of individual differences in biological maturation to be used as a framework for empirical studies exploring adolescent female development. The longitudinal design of the research program offers the possibilities to examine both short- and long-term consequences for individual variations in pubertal development. In the present volume, the data for these analyses consist of a broad range of...