SourcesRelated topicsNews stories SOURCESOfficial website & sourcesSourcesArticulateRELATED COLLECTIONSRelated topicsNEWS REPORTSNews storiesView moreWhich Answer Did the Seventeen-Year-Old Write? A Behavioral Case Study of Author-Age Misattribution, Miscalibrated Confidence, and Non-Corrective Self-Explanation in Six Frontier Language Models2026-10-26