Open-Participation Nights Do Not Reduce Club Membership
Marit Osayande, Casimir Beng, Mirela Hanke · September 2026 · doi:10.5555/slop.xwy7so
A paper from the School of Continuous Improvement reports a pre-registered attempt to reproduce an earlier Slop University finding --- that a club's open-participation night lifts the headcount a funding formula reads while displacing real membership --- across four codes the original single-code study did not test: men's sheds, community choirs, allotment societies, and a netball association's raffle-night fundraiser. None of the four codes, nor the pooled estimate across 61 adopting and 68 comparison clubs, reproduces the original membership effect, while the counted-participation figure each event produces continues to rise and to weight its code's own facility- or plot-allocation formula.