Does consciousness influence quantum systems (double-slit PK)?

The double-slit PK paradigm is one of the most provocative claims in psi research because it directly implicates consciousness in quantum mechanics. Radin's lab has published a steady series of results spanning over a decade (2012-2025), though the 2021 report is notable for having a null planned analysis with only exploratory post hoc analyses showing positive results. Independent pre-registered replications outside IONS (Maier 2018, 2020) have generally found null results. The Walleczek & von Stillfried (2019, 2020) AMP-based replication found a significant false-positive effect in a control condition but null results for Radin's predicted true-positive conditions, and documented HARKing in Radin et al.'s response — raising concerns about the reliability of the entire paradigm's statistical claims. Tremblay (2019) independently re-analyzed Radin's 2-year dataset and identified a critical statistical error (trimming before bootstrapping) that inflated significance by ~5 orders of magnitude (claimed p=10⁻⁸, actual p>0.05 after proper correction). Critics point to the lack of successful independent replication, the reliance on post hoc metrics, Jeffers' null results, and now documented statistical errors and false positives. Proponents counter that the protocol requires specific expertise and that Radin's series shows internal consistency across multiple metrics. The broader mind-matter meta-analysis (Bosch 2006) does not specifically address the double-slit paradigm but casts doubt on the wider class of PK effects. This controversy remains unresolved and is likely to intensify as more labs attempt the protocol.