Cults are groups that often exploit members psychologically and/or financially, typically by making members comply with leadership's demands through certain types of psychological manipulation, popularly called mind control, and through the inculcation of deep-seated anxious dependency on the group and its leaders.1
"A cult is a group or movement exhibiting a great or excessive devotion or dedication to some person, idea or thing and employing unethically manipulative techniques of persuasion and control (e.g. isolation from former friends and family, debilitation, use of special methods to heighten suggestibility and subservience, powerful group pressures, information management, suspension of individuality or critical judgement, promotion of total dependency on the group and fear of leaving it, etc) designed to advance the goals of the group's leaders to the actual or possible detriment of members, their families, or the community." 8