I'd say it's a signal for a rather mediocre kind of conscientiousness -- that is, for someone willing to put in long hours to achieve a certain goal, for sure -

I'd say it's a signal for a rather mediocre kind of conscientiousness -- that is, for someone willing to put in long hours to achieve a certain goal, for sure -- but for a goal they almost certainly believe to be fundamentally pointless. And as such, is likely to cause them to develop cynical attitudes about the industry -- and about the companies requiring these tests, in particular.