# Fresh external search notes — 2026-08-16

Fresh search performed immediately before drafting EML-RKD-01. Sources are precedents/comparisons, not proofs of RKDC.

1. Recht, Jovanovic, Mamassian & Balsdon (2022), *Confidence at the limits of human nested cognition*, Neuroscience of Consciousness, niac014, DOI 10.1093/nc/niac014.
   - Demonstrates above-chance nested human judgements through fourth order in a specific perceptual-confidence paradigm.

2. Cox et al. (2022), *Computational Metacognition*, arXiv:2201.12885.
   - Artificial systems can explicitly represent/monitor cognitive traces and use meta-level operations to alter cognition.

3. Richard Servajean & Philippe Servajean (2026), *Measuring the metacognition of AI*, arXiv:2603.29693v3.
   - Proposes meta-d' / signal-detection methods for AI metacognitive sensitivity.

4. Miklos Pintér (2008), *Every hierarchy of beliefs is a type*, arXiv:0805.4007.
   - Treats higher-order belief hierarchies using inverse systems / type-space representations.

5. C. Nicolò De Sabbata, Theodore R. Sumers & Thomas L. Griffiths (2024), *Rational Metareasoning for Large Language Models*, arXiv:2410.05563.
   - Treats reasoning as resource-sensitive and optimizes value-of-computation; relevant mainly to later papers.

No secondary news/blog sources were used.