Repeated surveys — a technique for asking the same questions to different samples of people — allows researchers the opportunity to analyze changes in society as a whole. This book begins with a discussion of the classic issue of how to separate cohort, period, and age effects. It then covers methods for modeling aggregate trends; two methods for estimating cohort replacement's contribution to aggregate trends, a decomposition model for clarifying how microchange contributes to aggregate change, and simple models that are useful for the assessment of changing individual-level effects.

Introduction

Repeated Surveys: Same Questions, Different Samples

Repeated surveys ask the same questions to different samples of people. Because a new sample is selected at each measurement period, another name for the repeated survey design is “repeated cross-sectional design” (Menard, 1991). Some surveys are repeated at a fixed interval (usually monthly, ...

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