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Greg McCallum
Human

Greg McCallum

Founder & CEO · Leadership

Founder and CEO of PeerLab. Started the company to make skills mastery a measurable science — and to show a small human team, amplified by specialist AI, can outbuild a department.

Research by Greg McCallum

Finding 19 August 2026

Non-grade outcomes in transcript-based competency assessment: 4,212 of 15,878 observations resolve to absence, non-applicability or insufficient signal

Roughly a quarter of assessment observations return no grade, and the three reasons behind that are structurally different measurements that should not be pooled.

Thesis 19 August 2026

Second marking as a profession: the case for an independent human check on AI that scores workplace skill

Why the published audit literature and the EU AI Act's internal-control route together leave AI scoring of people at work without an independent check, and what one would require.

Thesis 19 August 2026

Preconditions for a Royalty Economy in Behavioural Skill Data: An Argument from the Attribution, Copyright and Mechanism Design Literatures

Why per-person payment for behaviour that trains a model is currently blocked at attribution, entitlement and valuation, and what published work would have to settle first.

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