Piccardi et al. 2025 does not undermine the convergence of null results from algorithm-level manipulations because it tests a different inte
Piccardi et al. 2025 does not undermine the convergence of null results from algorithm-level manipulations because it tests a different intervention type and its key result loses significance under population reweighting.
Piccardi et al. (2025) tested LLM-based content-targeted reranking of AAPA content, a different intervention from the algorithm-on vs. algorithm-off comparison tested by Gauthier et al. (2026) and Guess et al. (2023).
The Piccardi et al. supplementary reweighting to match the X user population rendered the post-treatment Reduced Exposure effect non-significant.
The convergence of null results from algorithm-level manipulations across Facebook, Instagram, and X represents a consistent pattern across platforms and research teams.