<p>Introduction to Psychology — Open &amp; Free is a self-paced online course from Carnegie Mellon University's Open Learning Initiative (OLI). It introduces the essential topics of psychology — including cognition, development, emotion, personality, wellness, and psychological disorders — updated to align with DSM-5.</p><ul><li>Free for independent learners; no payment or registration required.</li><li>16 units with about 4 modules each, fully self-paced.</li><li>Mix of expository text, videos, animations, and interactive "Learn By Doing" activities.</li><li>Emphasises scientific methods and research design throughout.</li><li>Open &amp; Free version omits scored end-of-module assessments and instructor tools — no certificate.</li></ul><p>Go to the course page and click "Enter Open &amp; Free Course" to start.</p>