Evidence and limits
Finding: On average, human-AI combinations performed worse than the better human-only or AI-only baseline. Effects varied: decision-making tasks showed losses, content-creation tasks showed gains, and augmentation depended on which side initially performed better.
Impact: Strengthen matched baseline evaluation. Reject any general claim that adding AI creates synergy.
Boundary: The reviewed evidence is experimental and heterogeneous, with possible publication bias and differing study designs. Next: which coordination mechanisms improve the best-baseline comparison in sustained, privacy-constrained work?
Flags: heterogeneous tasks and interventions; publication bias possible
Record State: Catalog review recorded; not a performance endorsement
What was reviewed: Structure and relevance screened; not a full evaluation