PhenomenonTime & commitment · Logical Fallacy · Entry 64
Escalation of Commitment – when setbacks lead to more investment in the same course
Escalation of Commitment is the pattern of continuing or increasing investment in a course of action after negative results make stopping or changing direction worth serious consideration.
Where can it show up?
- Projects – a team responds to delays or poor results by committing another budget, milestone, or deadline without reopening the basic case for the project.
- Leadership – a decision-maker who chose the original plan feels pressure to defend it and becomes more committed after bad news.
- Product and technology work – additional resources are approved because the initiative is nearly finished, politically important, or difficult to abandon.
A better check
- Treat the next investment as a new decision: what future value can it still create and what will it cost from today onward?
- Separate irrecoverable sunk costs from other reasons to continue, such as genuine completion value, switching costs, new evidence, or strategic dependencies.
- Use exit and review criteria that were written before the latest setback when possible.
- Ask someone who did not own the original decision to review the next commitment. Sunk costs can contribute to escalation, but escalation is the broader process and can have several drivers.
Evidence review
established, but related constructs should be separatedWhat the evidence supports
Sunk-cost effects and escalation of commitment overlap but are not interchangeable. Sunk-cost research asks whether irrecoverable prior investments influence current choices. Escalation of commitment describes persistence or additional resource allocation to a failing course of action and can also be driven by personal responsibility, self-justification, project structure, and other factors.
How researchers describe the pattern
Experiments and field studies show that prior investments can increase continuation or utilization, while classic escalation studies found stronger additional investment after negative outcomes when decision-makers were personally responsible for the original choice. Meta-analytic work finds a sunk-cost effect overall but also substantial moderation by decision type and context.
Practical interpretation
Separate already-spent resources from the expected future costs and benefits of the next decision. For projects, define exit criteria before bad news arrives and ask an independent reviewer to assess the next increment of investment. Do not assume that every continued project is irrational: new information about future value can justify continuation even when past costs are sunk.
Reviewed sources
- Knee-deep in the big muddy: a study of escalating commitment to a chosen course of action foundational experiment · 1976 · DOI 10.1016/0030-5073(76)90005-2
- The psychology of sunk cost field study + experiments · 1985 · DOI 10.1016/0749-5978(85)90049-4
- On the sunk-cost effect in economic decision-making: a meta-analytic review meta-analysis · 2015 · DOI 10.1007/s40685-014-0014-8
Editorial review: 2026-08-18. Evidence status describes this entry, not every study ever published on the topic.
