Effective how or toward what ends? Seems to me that how someone views this issue is simply a function of how to skew and distort one's self image to more positively reflect how they want to be seen.

So for example if you do something you don't truly believe in or morally support for your work, then having psychological distance between your work and personal life makes more sense because you aren't staking "who you are" in your work. So you decide to define "who you are" in the other portions of your life.

Again, this seems to be cognitive dissonance at it's finest.