When it comes to getting things done, do you find it helpful to set deadlines? And if so, do shorter deadlines work better, or longer ones? Research suggests that in some cases, no deadline could be best (what?!). And at other times, the wrong kind of deadline can make us more, not less, likely to procrastinate. Prone to Procrastinating? Why the Way You Set Deadlines Could Make Things Worse, Not Better.