Equation of procrastination

ok, all the usual caveats about models, especially psychological ones, especially cognitive-psychological ones, but at the same time the beautiful thing of formalised representations of slightly abstract phenomena, which I think I'm in love with... this week: Temporal Motivation Theory

U=EV/ID

Desire to complete given task = (expectation of success * value of completion) / (immediacy of task * personal sensitivity to delay)

Telegraph article here, very slightly more in-depth take from Science Daily here... or, if you've really got something else you should totally be doing right now, presentation by Piers Steel (theory author) here (including suggestions for motivation control n' that).