About the Book

This open textbook Lifespan Development – A Psychological Perspective by Martha Lally and Suzanne Valentine-French, licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, has been adopted for PSYC 333 Fundamentals of Lifespan Development by Dr. Erin Barker at Concordia University, Montreal.

Content was replicated from the the original version on LibreTexts to Pressbooks. Minor changes were made throughout the book, including:

  • Relevant Canadian resources were added
  • H5P interactive activities were added
  • A glossary was added
  • Formatting of figures and tables was improved (e.g. numbering, positions, captions)
  • Alt-text was added to all images and photos

Open textbooks are open educational resources (OER), which are defined as “teaching, learning and research materials in any medium – digital or otherwise – that reside in the public domain or have been released under an open license that permits no-cost access, use, adaptation and redistribution by others with no or limited restrictions.” [1]

This open textbook was developed as a part of the Open Educational Resources Program at Concordia University, Montreal. For more information, please contact oer@concordia.ca.

Preface from the original version on LibreTexts:

This open text is disseminated via the Open Education Resource (OER) LibreTexts Project (https://LibreTexts.org) and like the hundreds of other open texts available within this powerful platform, it is licensed to be freely used, adapted, and distributed. This book is openly licensed which allows you to make changes, save, and print this book as long as the applicable license is indicated at the bottom of each page.

Instructors can adopt existing LibreTexts texts or Remix them to quickly build course-specific resources to meet the needs of their students. Unlike traditional textbooks, LibreTexts’ web based origins allow powerful integration of advanced features and new technologies to support learning.


The LibreTexts mission is to unite students, faculty and scholars in a cooperative effort to develop an easy-to-use online platform for the construction, customization, and dissemination of OER content to reduce the burdens of unreasonable textbook costs to our students and society. The LibreTexts project is a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education at all levels of higher learning by developing an Open Access Resource environment. The project currently consists of 13 independently operating and interconnected libraries that are constantly being optimized by students, faculty, and outside experts to supplant conventional paper-based books. These free textbook alternatives are organized within a central environment that is both vertically (from advance to basic level) and horizontally (across different fields) integrated.

The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. This material is based upon work supported by the National Science Foundation under Grant No. 1246120, 1525057, and 1413739. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation nor the US Department of Education.

  1. UNESCO. "Open Educational Resources (OER)". Accessed January 19, 2021. https://en.unesco.org/themes/building-knowledge-societies/oer


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Lifespan Development - A Psychological Perspective by Martha Lally and Suzanne Valentine-French is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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