Hi Larc,
I am not too worried about those who became JWs later in life like myself, but I am rather concerned for those raised in it. As you've pointed out, they are not taught critical thinking skills, but the difference with those who have spent their entire lives in the WTS is that it was with them as they were going through critical stages of development, and for them it no doubt runs pretty deep. Again, as some of you have pointed out they often resort to ad hominem arguments and attack the person. I think one obvious fact is that most JWs actually does very little self-examination and may be almost incapable of it. What do you think, can they be placed in the early developmental stages of say Piaget? I wonder if they are behind compared to the general population, but of course the indoctrination would complicate things even if they were at the same level.