Leidy Klotz and colleagues published a study in Nature in 2021 that found something counterintuitive about how humans solve problems. When given structures, texts, or schedules to improve, participants systematically preferred additive solutions — adding elements, adding words, adding meetings — over subtractive ones that removed existing elements, even when removal was objectively the better solution and even when participants were explicitly told that additions and subtractions were equally valued. The bias toward addition was not a marginal tendency. It was the dominant mode of problem-solving across every domain tested, and it persisted even when participants were reminded that subtraction was an option.

The mechanism Klotz and colleagues proposed was not that people prefer addition per se. It is that subtractive solutions are less cognitively available — they require more deliberate effort to generate because the brain’s default mode of improvement is to add something rather than remove something. When cognitive load is high and deliberate processing is limited — which describes the executive operating in typical conditions — the addition bias becomes more pronounced. The busy executive is not adding because addition is better. They are adding because generating a subtractive option requires more deliberate cognitive work than they currently have available to spend on the question.

The Escalation Problem

Barry Staw’s research on escalation of commitment documented a related pattern in organisational decision-making: once resources have been committed to a project or direction, decision-makers systematically overweight the sunk cost when evaluating whether to continue. The rational framework says sunk costs are irrelevant — the decision to continue or stop should be based on expected future value alone. The behavioural reality is that the resources already committed create a psychological anchor that makes the prospect of stopping feel like a loss in ways that distort the evaluation. The executive who has committed a quarter’s budget and six months of team time to a direction is not evaluating future prospects from a neutral starting point. They are evaluating them from a position where stopping would confirm that the prior investment was wasted — which activates the loss aversion that Kahneman and Tversky’s research established as one of the most reliable features of human judgment under uncertainty.

Kahneman and Tversky’s finding that losses feel approximately twice as powerful as equivalent gains provides the magnitude: the pain of acknowledging that a commitment was wrong is roughly double the pleasure of acknowledging that it was right. For the executive evaluating whether to exit a strategic direction, a product line, a partnership, or a team structure they initiated, this asymmetry means the objective case for stopping needs to be approximately twice as strong as the objective case for continuing before the stop decision feels emotionally equivalent to the continue decision. The result is that organisations routinely continue in directions past the point that a neutral evaluator — one without the prior commitment — would recommend exit.

The Accumulation That Never Clears

The combination of the addition bias and escalation of commitment produces a specific pattern in senior leadership portfolios: the number of active commitments — strategic initiatives, standing meetings, direct reporting relationships, board memberships, speaking commitments, client relationships — grows over the course of a career and very rarely shrinks voluntarily. Each addition made sense in context. Each continuation is supported by the sunk cost of prior investment. The subtractive option — exiting the commitment — generates the loss aversion response that makes it more emotionally costly than it objectively should be.

The organisational consequence is not just a time management problem. The working memory research establishes that open commitments — tasks and obligations that have been initiated but not completed — continue to occupy working memory capacity even when not actively being worked on. This is the Zeigarnik effect: incomplete tasks intrude on cognition in ways that completed tasks do not. The executive carrying thirty active commitments is not just busy during the time they are working on those commitments. The cognitive load of the open loops is distributed across the working day as background processing that reduces the attention available for the commitment that is currently in focus. The portfolio is too large not just because it requires too much time, but because it occupies too much of the cognitive architecture that every individual commitment requires to be executed well.

What Subtraction Actually Requires

Research on when executives actually exit commitments finds that voluntary exit — the proactive decision to subtract something from the portfolio before a crisis forces it — is rare and occurs primarily in two conditions. First, when the executive has a concrete, quantitative picture of the full commitment portfolio rather than a global sense of being busy. The addition bias diminishes when the full inventory of existing commitments is made visible, because visibility makes the opportunity cost of each addition concrete. Second, when there is an explicit decision rule that links subtraction to addition — a structure in which accepting a new commitment requires identifying an existing one to exit. Without the explicit rule, the default is always addition because that is the cognitively natural direction.

The physiological dimension of the overcommitment trap is the way that allostatic load and cognitive depletion compound the addition bias. The depleted executive is specifically less likely to generate subtractive solutions, because subtractive options require the deliberate, effortful cognitive processing that depletion impairs. The result is a self-reinforcing cycle: the overcommitted executive is depleted by their overcommitment, and the depletion makes it harder to generate the subtractive thinking that would reduce the overcommitment. The exit from this cycle requires both the structural intervention — the explicit commitment audit and subtraction rule — and the physiological intervention that restores the deliberate processing capacity the structural intervention requires. Four slots available monthly. Apply here.

Frequently Asked Questions

If subtractive solutions are objectively better in many cases, why don’t people learn to default to them over time?

Klotz and colleagues tested whether the addition bias diminished with practice and feedback and found that it largely did not — participants who received feedback that their additive solutions were worse than available subtractive ones continued to prefer additive solutions in subsequent trials. The bias appears to be a default of the cognitive system rather than a learned habit that can be unlearned through experience, which means the intervention is structural rather than experiential. The executive who has been a senior leader for twenty years and has received repeated feedback that their portfolio is overextended has not resolved the bias through that feedback. They have continued to add, with occasional forced subtractions when the overextension produced a visible crisis. The habit of proactive subtraction requires deliberate structural support — the explicit audit and decision rule — not just the awareness that subtraction is often better.

What is the difference between legitimate strategic expansion and overcommitment?

The distinction is not primarily about the number of commitments but about the relationship between the commitment portfolio and the cognitive and physiological capacity available to discharge it well. An executive with a high commitment load who is genuinely physiologically regulated and has built good enough systems and delegation that each commitment receives adequate cognitive attention is not in overcommitment. An executive with a moderate commitment load but a depleted physiological state and inadequate delegation infrastructure — where the active commitments are each receiving less focused attention than they require — is in overcommitment even if the portfolio looks manageable on paper. The diagnostic is not portfolio size but the ratio of committed capacity to available capacity, and the available capacity is a physiological variable as much as a scheduling one.

How does loss aversion specifically affect the decision to exit strategic initiatives?

The loss aversion effect in strategic exit decisions is compounded by the public commitment dimension. When an executive has publicly advocated for a direction — to the board, to the organisation, to external stakeholders — exiting that direction requires not just acknowledging to themselves that the investment was suboptimal but acknowledging it publicly. The public commitment activates the consistency principle alongside the loss aversion: the social cost of the inconsistency between the prior public commitment and the exit decision is added to the psychological cost of the sunk cost acknowledgment. This is why organisations that have been most publicly committed to a direction are most resistant to exiting it, and why the executives who championed the direction most visibly are least likely to be the ones who initiate the exit. The intervention that addresses this is creating explicit institutional permission for strategic reassessment that separates the quality of the original decision from the quality of the current information — making it possible to change direction without implicitly condemning the prior choice.

How does the SEAM protocol address the overcommitment pattern?

The SEAM Clarity Index includes a commitment architecture dimension that assesses the executive’s current portfolio against their self-reported and physiologically-indicated available capacity. Most executives in the assessment find that their committed capacity substantially exceeds their available capacity even in their own estimation, and that the gap is larger than they had consciously acknowledged — partly because the Zeigarnik effect means the open loops are occupying cognitive space that the executive attributes to general busyness rather than to specific commitments. The 90-day protocol addresses this through two tracks. The structural track works with the executive on the specific commitment audit and subtraction process: making the full portfolio visible, applying the decision rule that links addition to subtraction, and identifying the two or three commitments that carry the highest cognitive load relative to their strategic value. The physiological track restores the deliberate processing capacity that proactive subtractive thinking requires — because the capacity to choose subtraction is itself a cognitive resource that depletion degrades.