Exactly! And this is the classic M.O. of all cult-like organizations. Repetition, repetition, repetition, of the same dogma, the same terms, the same rules and threats. It is simply a form of neuro-linguistic programming that the JWs have managed to perfect over time.
Humans can be trained as easily as rats to perform rituals and tasks with the proper reinforcement. The JW receives his/her reinforcement in the form of psychological anesthesia that the "organization" provides them by insulating them from reality and keeping them in a constant state of anticipation regarding their "salvation".
Sadly, as those of us in the behavioural neuroscience field know all too well, it is much easier to 'de-program' a rat, then a human being following repetitive training and indoctrination.