Add to ORKGAging series has been that it keeps researchers and students abreast of cutting edge trends in the field of adult development and aging. Each new edition has incorporated contemporary advances in theory, mea-surement, and technology. The sixth edition reflects such major advancements in the 21st century. The chapters in the sixth edition edited by James E. Birren and K. Warner Schaie inform and stimulate the reader as to what challenging current directions are most important to further the study of psychology and aging. In order to achieve this goal, the editors enlisted a host of new authors writing on both established and emerging topics in the field. Although some topics are not represented in this edition, the topic areas that are cover...