Psychology Guide for the Major

MedlinePlus provides A-Z health information for the public. For each condition or disorder, the site provides an overview of symptoms, treatment, and current research including statistics

Organized in 11 sub-sections each containing 1-12 topics, this site originated as the 18th edition of The Merck Manual of Diagnosis and Therapy; topics are updated regularly, each topic page displays the date it was last reviewed and revised.

Online version of the American Psychological Association's Ethics Code (introduction, preamble, five general principles, and 10 ethical standards).