Evidence and limits
Finding: Human-AI teams increased communication and some text productivity, but human-human teams produced stronger images and overall campaign results were similar. Trait pairing changed outcomes in both directions.
Impact: Watch participant and modality fit. Strengthen disaggregated outcome and coordination-cost measurement.
Boundary: This is a preprint in a marketing setting with platform-specific interventions. Next: can a matched evaluation identify when another agent changes the result rather than only increasing messages and cost?
Flags: preprint; domain and trait-manipulation transfer
Record State: Catalog review recorded; not a performance endorsement
What was reviewed: Structure and relevance screened; not a full evaluation