- ADD/ADHD Online Information – adders.org
- Alzheimer’s Society – Leading the fight against dementia
- Association for Child and Adolescent Mental Health
- Association of Educational Psychologists
- Borderline Personality Disorder Information and Support – BPD Central
- Borderline personality disorder – Wikipedia, the free encyclopedia
- British Association for Counselling & Psychotherapy
- British Psychoanalytic Council
- British Psychological Society
- British Psychotherapy Foundation
- Bipolar UK | Home
- Mencap | Leading UK charity for people with a learning disability
- Mental Health Foundation
- Mental Health Net
- Mind, The Mental Health Charity
- National Institute of Mental Health · Home — US site
- Pearsons Assessments – Millon® Index of Personality Styles <
- Psychiatry On-Line Main Page
- PsychNet-UK – Mental Health, Counselling, Psychology and Psychiatry Portal
- Psychological Testing Centre Homepage
- Royal College of Psychiatrists
- UK Council for Psychotherapy
- Understanding Childhood
- Young Minds – Child & Adolescent Mental Health
