American Psychological Association

The American Psychological Association (APA) is the leading scientific and professional organisation representing psychology in the United States. Founded in 1892 with 31 members, it has grown to encompass over 172,000 members across 54 specialised divisions, spanning the fields of psychology, mental health, education, and scientific research.

APA's mission centres on advancing psychological science to promote health, education, and human welfare. The organisation maintains a commitment to scientific rigor and professional standards, while also engaging in advocacy and public education efforts aimed at applying psychological knowledge to benefit society.

Among its most recognised outputs is APA Style, a widely adopted style guide for academic writing and publishing first established in 1929. The organisation operates primarily within the United States.