The term scope creep describes a gradual expansion of an effort's scope, often outside the awareness of the people involved. They do recognize that the effort has become more ambitious, but they usually express surprise and shock when they finally appreciate the size of the resource shortfall. Curiously, the word creep doesn't connote growth or expansion — it carries instead a sense of gradual change with no direction implied.
That raises several questions. When scope creeps, why does it expand much more often than it contracts? Why don't we ever wake up one morning shocked to find enormous budget surpluses resulting from the gradual ebbing of scope that took place outside our awareness? Why do we never finish projects under budget and early because of out-of-control scope ebbing?
Downscoping does happen, usually when we trim goals to get out of trouble. But downscoping is consciously planned. Scope creep is neither conscious nor planned. The real question is: Why do so many unplanned changes of scope lead to scope expansion instead of scope contraction?
Two classes of mechanisms might explain the dominance of expansion over contraction. First, when we make scope change decisions, we might systematically fail to investigate — or even consider — suggestions that contract scope. Second, when we make such decisions, we might systematically favor alternatives that expand scope.
Because cognitive biases often provide intriguing explanations of behavioral phenomena that seem unrelated to intent, here is Part I of a short catalog of relevant cognitive biases, emphasizing systematic biases inhibiting adoption or consideration of scope contraction strategies.
- Sunk Cost Effect
- To investors, the term sunk cost denotes costs already incurred and not recoverable. The sunk cost effect [Staw 1976] is a bias that tends to make us unwilling to terminate an effort, because of the difficulty of accepting failure, even when continuing the effort will only lead to greater losses.
- Irrational Escalation
- Irrational escalationWhy don't we ever wake up in the
morning shocked to find enormous
budget surpluses resulting from
the gradual ebbing of scope
that took place outside
our awareness? bias can cause us to commit increasing levels of resources even when evidence strongly indicates that doing so is foolish. Unlike the Sunk Cost Effect, this bias can take hold even before resources have actually been expended. Mere commitment of resources is all that's required. For example, in bidding wars, the bidders eventually increase their bids well beyond the value of the items sought.
- Endowment Effect
- This bias affects how we value what we possess relative to what we don't. We tend to ascribe greater value to what we have now than we would be willing to pay to acquire it. In the business context, this bias might account for overvaluing work already performed, which could enhance both the sunk cost effect and irrational escalation. We might also overvalue the opportunity to continue work already underway, relative to any work we might do instead.
These three biases can contribute to failure to consider scope reduction alternatives. Next time, we'll examine biases that might make us more receptive to scope expansion. First in this series Next in this series Top Next Issue
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More articles on Project Management:
- Films Not About Project Teams: II
- Here's Part II of a list of films and videos about project teams that weren't necessarily meant to be
about project teams. Most are available to borrow from the public library, and all are great fun.
- Nine Positive Indicators of Negative Progress
- Project status reports rarely acknowledge negative progress until after it becomes undeniable. But projects
do sometimes move backwards, outside of our awareness. What are the warning signs that negative progress
might be underway?
- Down in the Weeds: I
- When someone says, "I think we're down in the weeds," a common meaning is that we're focusing
on inappropriate — and possibly irrelevant — details. How does this happen and what can
we do about it?
- Power Distance and Risk
- Managing or responding to project risks is much easier when team culture encourages people to report
problems and to question any plans they have reason to doubt. Here are five examples that show how such
encouragement helps to manage risk.
- Some Perils of Reverse Scheduling
- Especially when time is tight, project sponsors sometimes ask their project managers to produce "reverse
schedules." They want to know what would have to be done by when to complete their projects "on
time." It's a risky process that produces aggressive schedules.
See also Project Management, Emotions at Work and Cognitive Biases at Work for more related articles.
Forthcoming issues of Point Lookout
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- Most workplace collaborations produce results of value. But some collaborations — pseudo-collaborations — are inherently incapable of producing value, due to performance management systems, or lack of authority, or lack of access to information. Available here and by RSS on June 14.
- And on June 21: Asking Burning Questions
- When we suddenly realize that an important question needs answering, directly asking that question in a meeting might not be an effective way to focus the attention of the group. There are risks. Fortunately, there are also ways to manage those risks. Available here and by RSS on June 21.
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