The Procrastination Equation, Made Practical

The four variables that drive delay — and the specific levers to move each one

What causes procrastination, per Temporal Motivation Theory?

Piers Steel’s Temporal Motivation Theory frames procrastination as a predictable output of four variables: high expectancy of success and high task value push toward action, while impulsivity and delay until deadline push toward deferral. His 2007 meta-analysis found this equation accounts for most studied predictors of procrastination — making it a practical diagnostic rather than just a description.

Steel’s equation is: Motivation = (Expectancy × Value) ÷ (Impulsivity × Delay). Most anti-procrastination advice targets only one variable. The equation reveals why techniques that work for one person fail for another — different people have different bottlenecks. Below are the core practices, each targeting a specific variable in the equation, with the mechanism and an honest read on the evidence.

Practices

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