hausman-taylor-time-invariant-endogenous-effect

Task gallery / Machine learning / Version 1

Reference solution (oracle): Pass
No-op resistance check: Pass
QA verdict: Not recorded
Aggregate eligibility: Eligible version

The task

A human-resources analytics group has handed you several years of records for a panel of workers and wants to know how much one fixed personal qualification actually raises a worker's pay. Each worker entered the study with a single standardized credential index that was set before their career began and never changes across the years you observe. Alongside that fixed credential, the records track several job charac…

Excerpt only; not a complete executable task specification. Task ID task_3c7280b2b77845fa · version 1. Selection status: not fully recorded.

Results by model and effort

This exact task version only. Every rate is passes / valid runs with a Wilson 95% interval; n≤2 remains counts only. Macro aggregation does not apply within a single task. Baselines are summarized in the quality gates, not ranked. A passed no-op resistance check means that doing nothing did not solve the task.

Current evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes
Claude Opus 5 · default (unverified)	2/2	2 / 2	0	GOOD_FAILURE: 0 BAD_FAILURE: 0 GOOD_SUCCESS: 2 BAD_SUCCESS: 0

Legacy evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes

Every recorded run

4 recorded trials, including controls. Diagnostic labels do not replace verifier reward. Labels and quality checks are source declarations, not independently attested here. Internal evidence remains private; a missing public URL is shown explicitly. Records with invalid or absent rewards are not scored.

Run / model	Date / source	Reward / eligibility	Diagnostic class / source	Resources	Evidence
`trial_6bef5800a23e48a4` oracle@@	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: — Turns: — Cost: —	Not publicly available
`trial_f3cf973b823544bc` nop@@	Oct 12, 2026 console	0 · valid	GOOD_FAILURE frozen-classifier	Tokens: — Turns: — Cost: —	Not publicly available
`trial_1ef36131b967423d` Claude Opus 5 · default (unverified)	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 24,101 Turns: 17 Cost: $1.1853	Not publicly available
`trial_369e957d298d4d98` Claude Opus 5 · default (unverified)	Oct 12, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 71,001 Turns: 23 Cost: $3.3215	Not publicly available