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Thanks for this. The equation, for posterity:

> Motivation = (Expectancy x Value) / (Impulsiveness x Delay)

> Increase the size of a task's reward (including both the pleasantness of doing the task and the value of its after-effects), and your motivation goes up. Increase the perceived odds of getting the reward, and your motivation also goes up.

> The denominator covers the effect of time on our motivation to do a task. The longer the delay before we reap a task's reward, the less motivated we are to do it. And the negative effect of this delay on our motivation is amplified by our level of impulsiveness. For highly impulsive people, delays do even greater damage to their motivation.

The rest of the article is worth reading. (It's short; 2/3 of the page is footnotes and comments.) Firstly for the examples that root the equation in reality. Secondly for suggestions on increasing the numerator and decreasing the denominator.



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