"Fascinating new research sheds light on why so many people stick with dull jobs over trying something more exciting: They don’t expect to get paid enough to justify going after the more interesting options."
In essence it concluded that if extra effort is required and nor renumerated or rewarded, those studied would opt for boring jobs.
“I can see lots of good reasons why your gut would tell you not to work unless you get paid more than you’d get for doing nothing, but the lesson I take from these studies is that that reaction risks leaving you bored and unhappy.” quote by researcher.
http://www.forbes.com/sites/elainepofeldt/2013/09/30/why-people-choose-boring-careers/#!