Statistics

For more than 100 years, the American Psychological Association (APA) has represented psychology in the United States. Based in Washington, D.C., APA has more than 137,000 members, making it the largest association of psychologists worldwide.

Psychologists and other mental health professionals in the discipline embrace all aspects of the human experience. In their work, they confront a wide array of topic areas, including:

  • Addiction
  • Anger and emotional health
  • Development and learning
  • Conflict resolution
  • Depression
  • Family issues and divorce
  • Forensics and criminal justice
  • Obesity
  • Personality disorders
  • Sexuality
  • Sleep
  • Stress and trauma

They can also be found in every conceivable setting, ranging from scientific research centers to the criminal justice system, from private practices and mental health facilities to manufacturing and Fortune 500 companies, and from schools and educational institutions to hospitals and senior care facilities.