Christina Langer ยท AI Fault Linehttps://aifaultline.com/authors/christina-langer/New papers by Christina Langer in the AI Fault Line guide, and news naming them. Paper: Task Expansion with Generative AI: Experimental Evidence on Middle-Skilled, Early-Career Workershttps://aifaultline.com/research/p/doi-10-65864-euu6lxmt4t/https://aifaultline.com/research/p/doi-10-65864-euu6lxmt4t/Wed, 07 Oct 2026 00:00:00 +0000A field experiment randomly gave 673 final-year IT apprentices at twelve German vocational schools access to generative AI for occupation-specific tasks. AI raised productivity across all task types, most where unaided performance was lowest, and by 26-31 percentage points on tasks beyond the apprentices' formal training, without reducing immediate task comprehension.