A method for studying changes in group patterns -- particularly groups based on age -- cohort analysis seeks to isolate changes attributable to alterations in behaviour or attitudes within an age group; as an example of behaviour change, the pattern of consumption of alcohol within a cohort is analyzed.

This book explores the ways in which statistical models, methods, and research designs can be used to open new possibilities for APC analysis. Within a single, consistent HAPC-GLMM statistical modeling framework, the authors synthesize APC models and methods for three research designs: age-by-time period tables of population rates or proportions, repeated cross-section sample surveys, and accelerated longitudinal panel studies. They show how the empirical application of the models to various problems leads to many fascinating findings on how outcome variables develop along the age, period, and cohort dimensions.

The existence of the present volume can be traced to methodological concerns about cohort analysis, all of which were evident throughout most of the social sciences by the late 1970s. For some social scientists, they became part of a broader discussion concerning the need for new analytical techniques for research based on longitudinal data. In 1976, the Social Science Research Council (SSRC), with funds from the National Institute of Education, established a Committee on the Methodology of Longitudinal Research. (The scholars who comprised this committee are listed at the front of this volume. ) As part of the efforts of this Committee, an interdisciplinary conference on cohort analysis was held in the summer of 1979, in Snowmass, Colorado. Much of the work presented here stems from that conference, the purpose of which was to promote the development of general methodological tools for the study of social change. The conference included five major presentations by (1) William Mason and Herbert Smith, (2) Karl J6reskog and Dag S6rbom, (3) Gregory Markus, (4) John Hobcraft, Jane Menken and Samuel Preston, and (5) Stephen Fienberg and William Mason. The formal presentations were each followed by extensive discussion, which involved as participants: Paul Baltes, William Butz, Philip Converse, Otis Dudley Duncan, David Freedman, William Meredith, John Nesselroade, Daniel Price, Thomas Pullum, Peter Read, Matilda White Riley, Norman Ryder, Warren Sanderson, Warner Schaie, Burton Singer, Nancy Tuma, Harrison White, and Halliman Winsborough.

"This book is key reference material for researchers wanting to know how to appropriately deal with Age-Period-Cohort issues in their statistical modelling. It deals with the identification problem of working with co-linear variables, why some currently used methods are problematic, and suggests ideas for what applied researchers interested in APC analysis should do. Suitable for all those working with APC effects in human data, the book is particularly suitable for social scientists with a moderate level of quantitative understanding"--

This book offers strategic leaders with essential information for their most important role: the change management function of positioning the organization for success into the future. To do so, leaders need to sort through a myriad of forecasts, predictions and weak indicators of change to make timely decisions. This volume addresses the most critical factor for future success: people and, specifically, harnessing the potential the current youth cohort will bring when they join the full-time workforce. Drawing on multi-disciplinary analyses by 37 researchers, the book presents an integrative assessment of the characteristics that those in the current youth cohort are likely to bring to the workplace. The focus is on those born after 2005 with an examination of the implications of this cohort being raised from birth immersed in an increasingly omnipresent digital environment which extends far beyond social media. The authors see the coming ‘digital tsunami’ as creating disruptive effects across major elements of our economy and even society however optimistically conclude that the digital environment and the development of 21st Century skills in schools will equip the next generation with essential competencies, attitudes, social skills and work goals. The key to harnessing the potential of this generation will be to modify current human resources and workplace practices which will mean sweeping away much of the ‘boomer’ legacy that this cohort has imprinted on organizations. To assist leaders, the book goes beyond presenting a rich portrait of who these youth may become by providing practical recommendations for the changes that need to start now in order to position the organization to benefit from what they will bring. As the astute strategic leader knows: objects in the future can be closer than they appear.

Planning clinical research requires many decisions. The authors of this book explain key decisions with examples showing what works and what does not.

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