The core idea
Expectancy theory separates expectancy, instrumentality and valence. Expectancy is the perceived link between effort and performance; instrumentality concerns performance leading to an outcome; valence is the value of that outcome. A simplified multiplicative presentation highlights that one weak link can undermine motivation. It is a decision lens, not a precise numerical formula for predicting an individual’s behaviour.
Source and attribution [1]Using it in practice
Check the links in order. Does the person have the resources and skill to succeed? Are criteria and decisions credible? Is the offered outcome something they value? Be explicit about uncertainty: a competitive promotion process cannot honestly promise promotion to everyone who improves. Distinguish controllable performance from results heavily affected by demand, territory or equipment.
An example, not a reported case
Worked example · illustrative
A sales team can earn a development placement for meeting a target. One employee doubts the target is achievable in a new territory; another expects managers to pick favourites; a third cannot travel for the placement. A larger bonus message misses three different problems. HR works on fair territory assumptions, transparent selection and alternative development options, then checks whether those changes are understood.
What to watch for
People do not always calculate choices consciously or rationally. Fairness, identity, habit and social context also shape behaviour.
Take it into your next conversation
Three useful questions.
- Can effort realistically improve performance?
- Is the performance–outcome link credible?
- Does this outcome matter to this person?
Related terms
Go to the evidence
Sources & attribution
[1] Vroom, V. H. (1964). Work and Motivation. Wiley; reissued edition. ↗
The core idea is an original summary of the cited work. Application notes, examples and sketches are our interpretations, not quotations or reproductions of the authors’ figures. Publisher records may require access to read the full original work.
Published 2026-09-20 · Reviewed 2026-09-20. Editorial approach