My model of a cult is a mechanism that exploits various flaws in human thinking. For example, peer pressure turned up to eleven: if you leave a cult, you lose all your friends at the same moment. (In real life, one's friends are usually not this coordinated.) The cult keeps you busy with all the cultish stuff, which makes the natural procrastination about important decisions (such as leaving the cult) even stronger. There is the initial "love bombing", which prevents you from estimating how happy you would be if you joined. Etc.
Typically, a conversion sticks because an organization provides value to its members.
Disagree connotationally. (Also I am not sure what "conversion sticks" means precisely. If a person spends 5 or 10 years in a cult and then leaves, do we consider those initial years as a success, because the person did not run away immediately?) Yes, technically, the organization provides something, but if we want to get more specific, it usually provides promises that something very good will happen in the unspecified - but very close - future. It also provides something immediately, for example a social group, but I think those promises are very important for many people. So if we define "value" as promises that sound good but are never fulfilled, then yes, the organization provides the value to its members. But if we define "value" as the thing that was promised, then it does not really provide the value.
Some old SIAI work of mine. Researching this was very difficult because the relevant religious studies area, while apparently completely repudiating most public beliefs about the subject (eg. the effectiveness of brainwashing, how damaging cults are, how large they are, whether that’s even a meaningful category which can be distinguished from mainstream religions rather than a hidden inference - a claim, I will note, which is much more plausible when you consider how abusive Scientology is to its members as compared to how abusive the Catholic Church has been etc), prefer to publish their research in book form, which makes it very hard to review any of it. Some of the key citation were papers - but the cult panic was so long ago that most of them are not online or have been digitized! I recently added some cites and realized I had not touched the draft in a year; so while this collection of notes is not really up to my preferred standards, I’m simply posting it for what it’s worth. (One lesson to take away from this is that controlling uploaded human brains will not be nearly as simple & easy as applying classic ‘brainwashing’ strategies - because those don’t actually work.)
Reading through the literature and especially the law review articles (courts flirted disconcertingly much with licensing kidnapping and abandoning free speech), I was reminded very heavily - and not in a good way - of the War on Terror.
Old American POW studies:
Started the myth of effective brain-washing. But in practice, cult attrition rates are very high! (As makes sense: if cults did not have high attrition rates, they would long ago have dominated the world due to exponential growth.) This attrition claim is made all over the literature, with some example citations being:
a back of the envelope estimate for Scientology by Steve Plakos in 2000:
Iannaccone 2003, “The Market for Martyrs” (quasi-review)
Singer in particular has been heavily criticized; “Cult/Brainwashing Cases and Freedom of Religion”, Richardson 1991:
“Overcoming The Bondage Of Victimization: A Critical Evaluation of Cult Mind Control Theories”, Bob and Gretchen Passantino Cornerstone Magazine 1994:
Gomes, Unmasking the Cults (Wikipedia quote):
“Psychological Manipulation and Society”, book review of Spying in Guruland: Inside Britain’s Cults, Shaw 1994
Anthony & Robbins 1992, “Law, Social Science and the ‘Brainwashing’ Exception to the First Amendment”:
“Brainwashed! Scholars of cults accuse each other of bad faith”, by Charlotte Allen, Lingua Franca Dec/Jan 1998: