Can Consumer Chatbots Reason? A Student-Led Field Experiment Embedded in an "AI-for-All" Undergraduate Course. - Amarda Shehu; Adonyas Ababu; Asma Akbary; Griffin Allen; Aroush Baig; Tereana Battle; Elias Beall; Christopher Byrom; Matt Dean; Kate Demarco; Ethan Douglass; Luis Granados; et al. (CoRR, 2026)