A dedicated search finds no independent test of ChronoCulture's older-year-naming asymmetry — the two nearest candidates each ask a different question

single-source-capcorroborationllm-evaluationcultural-awarenessworld-values-surveychronoculture

A targeted search for any source independent of ChronoCulture (arXiv:2610.20472) that tests its older-year-naming asymmetry — whether naming the older of two decades-distant survey years helps a model's prediction only as the real cultural shift between those years grows large, while naming the newer year does not — found none. Two candidates were checked directly and neither reaches it. Daryani, Bogen & Daepp (2026) tested only whether naming the most recent surveyed year pulled a model toward that recent snapshot (it did not). Liu, Kaneko & Chu (2026) tested only which WVS wave a model's unprompted answer resembles most. Neither names an explicit older year or stratifies by shift size. Adjacent mechanistic anchoring-bias literature (arXiv:2511.05766, arXiv:2606.12818) was also checked and uses numerical or price anchors rather than calendar years tied to survey data, so it does not bear on this claim either.

One caveat matters for how to read the silence. Daryani et al.'s own limitations section frames their null year-naming result as inconclusive about mechanism, not as evidence that temporal information is simply absent from a model: "The weak effect of explicitly naming the survey year does not suggest that such information is not present in the model's parameters, but rather that such information, if present, is not readily accessible by means of a simple temporal instruction." The gap in independent testing of ChronoCulture's specific conditional effect is therefore not an oversight by secondary readers — it is a gap the primary authors closest to a related null result left open themselves.

The claim remains single-sourced on arXiv:2610.20472 (independent_roots: 1, unchanged), and question-corroborate-chronoculture-older-year-naming-asymmetry stays open.