In the Korean context, surveys have been done of defectors (for the obvious reasons) to try to gauge the current level of support for the regime. The result is sadly predictable for anyone who's seen Russians nostalgic for Stalin or Chinese wistfully thinking back to Mao: Il-Sung is still venerated by many North Koreans, even if they don't like his son or despise the pig-grandson.
Some survey data is summarized in The Hidden People of North Korea: Everyday Life in the Hermit Kingdom and "An Assessment of the North Korean System's Durability" is an extensive discussion of defector surveys. (Apparently in the 2002 defector survey, 67% of them believed their countrymen venerated Il-Sung as the "greatest mind of humanity". Many interesting bits, like "Few North Koreans seem aware that the United States has been one of North Korea's principal food donors.")
From a new paper, "Preparing for the Possibility of a North Korean Collapse", Bennett 2013 (RAND):
......Since the end of the Korean War, the North Korean government has indoctrinated its population, only allowing them access to state-generated information. But information on the outside is spreading in North Korea, debunking at least some of the North Korean propaganda, and generating the potential for instability: “There is mounting evidence that Kim Jong Il is losing the propaganda war inside North Korea, with more than half the population now l
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: