There is considerable disagreement, both of which concepts to be used, and in the view of the change that a person undergoes when entering various controversial groups. Is it harmful or just different? A major distinction is especially between those who have a psychological perspective and sociological perspective. Eileen Barker, a researcher in sociology, says that in the sociological tradition has other issues and do not take a position on whether something is good or bad. The psychological research is mainly about symptoms and causation and treatment. The starting point is abuse, trauma and abuse as told by former members. I do not endorse or recommend individuals or organizations listed below.  The list, which does not claim to be exhaustive, is provided for informational purposes only.

CAIC Cult Awareness and Information Centre

Cesnur Center for Studies on New Religions

Charlotteessen
Author of the book Cult Child (Sektbarn). Swedish

CEI – Culteducation
“An Internet archive of information about cults, destructive cults, controversial groups and movements. The Cult Education Institute (CEI), formerly known as the Ross Institute of New Jersey, is a nonprofit public resource with a vast archive that contains thousands of individual documents. “

Finyar
“FINYAR is a Nordic organization whose main task is to promote research and provide information on new religious movements and alternative spirituality.”

FRI – Föreningen Rädda Individen (swedish)
A supportgroup for former members of cultic groups

The Swedish Skeptics Association
“Vetenskap och Folkbildning (VoF) is a Swedish non-profit organization set out to promote popular education about the methods of science and its results. By engaging in open debate, the organization particularly sets its task to discredit false ideas about matters that can be resolved scientifically“.

Hope Valley
“Providing Psychotherapy, Counselling, Post-Cult Counselling, Supervision and Training”

Hjälpkällan (swedish)
A s
upportgroup for former members of cultic groups

ICSA ( International Cultic Studies Association)
“Founded in 1979*, the International Cultic Studies Association (ICSA) is a global network of people concerned about psychological manipulation and abuse in cultic or high-demand groups, alternative movements, and other environments. ICSA is tax-exempt, supports civil liberties, and is not affiliated with any religious or commercial organizations”.

Inform
“Inform is an independent charity providing information that is as up-to-date and reliable as possible about what many call cults, sects, new religious movements (NRMs), non-conventional religions”.

Pyramid Scheme Alert
“Pyramid Scheme Alert is the first consumer organization to confront the abuses and trickery of pyramid scheme perpetrators. Pyramid Scheme Alert is a non-profit, privately supported (by memberships and donations), all-volunteer,
and totally independent consumer campaign”.

Randi .org
“The James Randi Educational Foundation was founded in 1996 to help people defend themselves from paranormal and pseudo-scientific claims. The JREF offers a still-unclaimed million-dollar reward for anyone who can produce evidence of paranormal abilities under controlled conditions.”

Steven Hassan – Freedom of mind
“Steven Alan Hassan, cult counselor and mind control expert , is the Nationally Certified Counselor and licensed Mental Health Counselor who has developed the breakthrough approach to help loved ones rescue cult mind control victims”.

Wellspring
“Wellspring has helped over 1000 survivors or coercion and exploitation in our residential program in Ohio, and hundreds of thousands through our consultation and educational services”.