Record of Changes
| Edition | As of Date | Changes Made |
| 1.0 | May 2019 | Initial writing; feedback pending |
| 2.0 | June 2021 | Copyediting changes; some revisions to add clarity; added a Tokens of Appreciation page. |
License
Principles of Learning and Behavior Copyright © 2021 by Washington State University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.