This accessible introduction to the theory and practice of longitudinal research takes the reader through the strengths and weaknesses of this kind of research, making clear: how to design a longitudinal study; how to collect data most effectively; how to make the best use of statistical techniques; and how to interpret results. Although the book provides a broad overview of the field, the focus is always on the practical issues arising out of longitudinal research. This book supplies the student with all that they need to get started and acts as a manual for dealing with opportunities and pitfalls. It is the ideal primer for this growing area of social research.

Analyzing Durations

This chapter addresses the analysis of duration data. Rather than having measured a qualitative variable at several discrete time points, investigators may have information on the timing of changes in the participants’ scores on this variable. If so, the length of the period is known during which the participants in the study belonged to a particular state (that is, how many months they were unemployed, or the length of the ...

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