Attributions

Chapter 1, 2, 3, and 4 include material from Lifespan Development: A Psychological Perspective – Second Edition by Martha Lally and Suzanne Valentine-French, published by University of Minnesota, licensed CC BY-NC-SA except where otherwise noted.

Use of CDC material and data throughout this book does not imply endorsement by CDC, ATSDR, HHS or the United States Government of OpenOKState, the Oklahoma State University Libraries, or Oklahoma State University.