My girlfriend and I have speculated that bad JW behavior comes from handing over their conscience in to the "FDS's (Mother's)" care. That would explain why secret sins flourish (Mommy can't see me), and why common acts of decency are forgotten (not covered in the magazine this week).
Ordinary people exercise their conscience by following a few general principles, then running those principles through various real-life incidents. Hmmm. Didn't I see that in a scripture somewhere?