• American Psychological Association
• American Counseling Association
• AmoebaWeb Psychology Directory
• Encyclopedia of Psychology
• Mental Health InfoSource
• Mental Help Net
• National Institute of Mental Health
• Neurosciences on the Internet
• PsychCrawler
• Psychwatch

Abnormal Psychology

• BehaveNet® Clinical Capsule™: DSM-IV-TR Classification
• Faces of Abnormal Psychology

Specific Disorders and Mental Health Issues

• Alcoholics Anonymous
• Alzheimer's Association
• Autism Research Institute
• Children & Adults with Attention-Deficit/Hyperactivity Disorder (CHADD)
• Cocaine Anonymous
• Depression and Bipolar Support Alliance
• International Dyslexia Association
• LD OnLine
• NARSAD: National Alliance for Research on Schizophrenia and Affective Disorders
• National Association for Down Syndrome
• National Eating Disorders Association
• Obsessive Compulsive Foundation
• Sidran Institute: PTSD and Dissociation Resources
• TARA Association for Personality Disorder

Child Psychology

• American Academy of Child & Adolescent Psychiatry
• The Brazelton Institute
• Child Anxiety Network
• Child Development Institute
• Child Development: National Network for Child Care
• Classic Theories of Child Development
• Developmental and Behavioral Pediatrics Online
• KidsPsych
• Society of Clinical Child and Adolescent Psychology

Educational Psychology

• Cognitive Development and Intelligence
• Ed Psyc Central
• Learning Strategies Database
• Learning Theories
• Multiple Intelligences Resources
• National Association of School Psychologists: Resources
• Theory Into Practice (TIP)
• Thomas B. Fordham Institute

Gerontology

• AARP AgeLine Database
• AgingStats.gov
• Alzheimer's Association
• American Society on Aging
• National Center on Elder Abuse
• National Institute on Aging
• Social Gerontology: The Social Psychology of Aging
• U.S. Administration on Aging (AoA)

Human Development

• Health and Human Development Programs
• Human Development Foundation
• Humanity Development Library
• Life-Span Development Resources
• National Institute of Child Health & Human Development
• The Project on Human Development
• United Nations Human Development Reports

Human Sexuality

• CDC Reproductive Health
• Electronic Journal of Human Sexuality
• Guttmacher Institute
• Human Sexuality Resources
• International Encyclopedia of Sexuality
• National Sexuality Resource Center
• SIECUS: Sexuality Information & Education Council of the U.S.
• Society for the Psychological Study of Lesbian, Gay, and Bisexual Issues

Social Psychology

• Allyn & Bacon's Social Psychology Links
• Current Research in Social Psychology: An Electronic Journal
• Social Psychology Basics
• Social Psychology Network
• Society for Personality and Social Psychology