This Open Educational Resource was adapted for Northern Virginia Community College’s PSY 235 course.

Except where expressly noted otherwise, the contents of this course are based on materials published in the Open Course Library by Bill Pelz or Laura Overstreet. These materials were originally published freely under a Creative Commons Attribution License (you can review the license at http://creativecommons.org/licenses/by/3.0/). The original version of the materials as published as Psyc 200 Lifespan Development may be accessed for free at http://opencourselibrary.org/econ-201/.