The NeuroDelta Coefficient
The NeuroDelta Coefficient (NDC) expresses human capital risk in an acquisition as a multiplier centred on 1.0, in the convention of beta: NDC = 1 − human delta ÷ 50. Above 1.0 the deal carries priced human risk; below 1.0, a documented premium. It exists so that the people in a transaction can be argued about in the same units as every other risk that already has a line in the model.
How the number is built
NDC = 1 − Δ ÷ 50
- 1
Team score
Each key person is measured on eight behavioural parameters and compared with the benchmark range their role requires at the target’s stage of corporate life — 287 professions across 8 stages. Individual fits are blended in proportion to how much each seat can move the outcome, on a scale where 50 is the market-average team.
- 2
Friction
Six measured conditions of the transaction itself are subtracted. They belong to the deal, not to the people: the same team scores differently in two differently designed acquisitions.
- 3
Deal score and delta
Team score minus friction is the deal score. Its distance from 50 is the human delta, and 1 point ≈ 1% of price.
- 4
The coefficient
NDC = 1 − delta ÷ 50. The points are for the discussion; the coefficient is for the valuation model.
How it enters a valuation
NDC enters through the channel already built for deal-specific risk: the company-specific risk premium in a build-up valuation, or a direct adjustment to WACC. (NDC − 1.0) multiplied by the equity risk premium gives the human capital risk premium in basis points — with the implied ERP of 4.23% (Damodaran, implied ERP, January 2026) in the published worked example.
The point-based rule of thumb and the formal route should land close together. If they diverge sharply, neither should be trusted and the inputs need checking.
The six friction conditions
Friction is the part of the deal score that comes from the transaction rather than from the people. A capable team can still be rejected by the receiving organisation — that is what these six measure.
- Culture proximity — how far apart the buyer's and the target's operating logic are. The largest single item, because culture distance is one of the most thoroughly documented causes of lost deal value (Mercer, 2018).
- Integration depth — from an autonomous target that keeps running itself, to full absorption where everything changes at once.
- Governance and pace change — a new board cadence, monthly reporting packs and a faster decision clock. Absorbing this is a capability, not a formality.
- Growth engine after close — whether value creation rests on the people already there, or on people yet to be hired. If it rests on the existing team, every gap hits the plan directly.
- Integration timeline — from a runway compressed to the point where nothing can be sequenced, to one long enough to adapt and correct.
- Key-person retention lock — from nothing at all, to multi-year earnouts, retention pools and enforceable non-competes on critical roles. With nothing in place, the general acquisition base rate applies: roughly a third of acquired employees leave within the first year, against 12 per cent of comparable regular hires (Kim, MIT Sloan, 2019).
What the coefficient means for the deal
- EXCEPTIONALΔ ≥ 20A 5–15% premium is defensible. The people are the seller's strongest argument, and this is the rare case where the human side of the deal justifies paying up.
- STRONGΔ ≥ 10A premium of up to 5%, and a lighter escrow. The integration plan can be less defensive than a standard deal of this size would require.
- ADEQUATEΔ ≥ 0No adjustment either way. The financials drive the deal, and human capital is neither an argument for paying more nor a reason to pay less.
- ELEVATEDΔ ≥ -10A 5–10% discount — or, better, fix the named causes before close and re-run the assessment. At this level the causes are usually specific and addressable in the deal design.
- HIGH RISKΔ ≥ -20A 10–20% discount, a bigger holdback and key-person insurance. The transaction remains doable, but its protective structure has to carry the risk the price alone cannot.
- CRITICALΔ ≥ -30A 20–30% discount, or restructure the transaction. At this depth a discount alone rarely helps: the terms, the pace or the integration model are usually what needs to change.
- WALK AWAY—The human risk exceeds the financial opportunity. This is a verdict on the transaction as designed, not on any person in it — a differently structured deal for the same asset may well land elsewhere on this scale.
These are reference adjustments for a valuation discussion, not investment, legal or valuation advice on any specific transaction. Each band is a verdict on the transaction as designed, never on anyone in it.
What is not proven
The composite coefficient has not yet been back-tested against completed transactions. It is in the first of four validation phases: publish the method in full; back-test against 50+ closed deals; run prospective validation on live deals with twelve-month follow-up; publish the empirical study for peer review.
The component parts carry different weight. The measurement itself is disclosed with its psychometric properties, but those are first-party figures obtained on our own sample and not peer-reviewed. The frameworks it rests on — the five-factor model, the Adizes lifecycle, discount-rate construction — carry decades of independent literature. The point values of friction are engineering judgements calibrated to published loss ranges, stated openly and versioned.
The bands are verdicts on the transaction as designed, never on anyone in it. Use for dismissal decisions falls outside what the method supports.