1. American Psychological Association (APA): APA is the largest scientific and professional organization representing psychology in the United States. It is dedicated to advancing the field of psychology and promoting the well-being of individuals and communities. APA publishes numerous journals, holds conferences, and sets ethical guidelines for psychologists. 2. American Sociological Association (ASA): ASA is a non-profit organization dedicated to advancing the study of sociology and promoting sociological research and scholarship. It publishes several academic journals, hosts an annual conference, and provides resources and support for sociologists at all career stages. 3. National Education Association (NEA): NEA is the largest professional organization and labor union for educators in the United States. It advocates for public education policies, supports educators through professional development and resources, and works to improve the quality of education for all students. 4. American Association for the Advancement of Science (AAAS): AAAS is an international non-profit organization dedicated to advancing science, engineering, and innovation globally. It publishes the journal Science, hosts conferences, and advocates for evidence-based policies in the scientific community. 5. American Medical Association (AMA): AMA is a professional organization representing physicians in the United States. It works to promote the interests of physicians and improve public health through advocacy, education, and research. AMA publishes journals, sets professional standards, and provides resources for physicians to stay informed on the latest developments in medicine.