Jehovah's Witnesses present a unique sociological challenge. They are totally closed to outside scrutiny and cannot be studied using proper sociological methods. Practically all studies (or pseudo-studies) are either written by former members or rely heavily on information supplied by former members. But this presents an obvious and enormous sociological hindrance. Former members are heavily biased. Proper sociological studies of groups certainly include information culled from former members as this information is valuable as a check against other information sources. But it would never be regarded as unbiased, and would never serve as the main source of study.
A study of the Moonies conducted by Eileen Barker ("The Making of a Moonie" 1984) was a massive undertaking involving detailed interviews with members, former members and neutral third parties. The author actually lived for some time at a Unification Church compound and spoke freely with the members about various issues. Although there was certainly opposition to her work to some degree, I found it ironic that in contrast to this church which seems to be commonly regarded as an 'obvious cult,' Mrs. Barker's study would be impossible to conduct if the subject had been the JWs. It would not be permitted.
So we will continue to have books like Diane Wilson's. It is not a proper sociological study and should not be presented as one. The best study of the JWs, in my opinion, is that of James Penton. He has managed to don the role of a former member who has access to the information no one else would be allowed and a neutral observer skilled in sociology at the same time. It would be nice to have another Penton.
mox