EA - A Cost-Effectiveness Analysis of Historical Farmed Animal Welfare Ballot Initiatives by Laura Duffy

Welcome to The Nonlinear Library, where we use Text-to-Speech software to convert the best writing from the Rationalist and EA communities into audio. This is: A Cost-Effectiveness Analysis of Historical Farmed Animal Welfare Ballot Initiatives, published by Laura Duffy on June 20, 2023 on The Effective Altruism Forum.On May 11, 2023, the Supreme Court of the United States upheld a 2018 California law, Proposition 12, which banned the sale of certain animal products that did not meet minimum welfare standards. Especially now that such ballot initiatives have withstood legal challenges, a relevant question we might ask is: how cost-effective were initiatives like Proposition 12 at reducing farmed animal suffering? Below is the executive summary of a report I wrote for Rethink Priorities analyzing the cost-effectiveness of not just Proposition 12, but also three other historical animal welfare ballot initiatives in the United States. In this report, I also compared the results to the cost-effectiveness of corporate campaigns. The full report is viewable here with a detailed discussion of the methodology and results.Executive SummaryKey ResultsIn this report, I estimated the impact and cost-effectiveness of four historical United States ballot initiatives that either restricted the use of common animal confinement methods (including extremely confining stalls and tethering for veal calves, extremely confining gestation crates for breeding sows, and conventional cages for egg-laying hens), set minimum per-animal space requirements, and/or mandated cage-free systems for egg-laying hens. These initiatives are Arizona Proposition 204 (2006), California Proposition 2 (2008), Massachusetts Question 3 (2016), and California Proposition 12 (2018).The three metrics of impact I estimated were:The number of years of improved animal welfare produced per dollar spent passing the initiatives for three animal types (veal calves, breeding sows, and egg-laying hens);The estimated years of disabling pain-equivalent suffering alleviated per dollar for veal calves, breeding sows, and egg-laying hens; andThe relative years of improved hen welfare and disabling pain-equivalent suffering avoided per dollar per year of counterfactual impact compared to corporate cage-free campaigns, rated using an equivalent metric.I estimated these metrics by building a Monte Carlo model in Causal that used data on state population sizes, per-capita animal product consumption, state animal populations, and campaign fundraising amounts to estimate the number of animals whose quality of life was improved over the first four years in which the ballot initiatives were in place. In addition, for egg-laying hens specifically, I used data from the Welfare Footprint Project to estimate the years of suffering alleviated by the transition away from conventional cages for the ballot initiatives that included egg-laying hens (Welfare Footprint Project). Finally, I compared the per-dollar years of improved welfare generated and suffering avoided by ballot initiatives to that accomplished by corporate campaigns, using cost-effectiveness estimates from Saulius Šimčikas, the estimated number of animals whose lives were improved, and the Welfare Footprint data.The key takeaways are:Among all species, about 5.0 years of animal life were improved per dollar spent (with a 90-percentile range between 3.9 and 6.4 years per dollar). This translates into approximately 0.10 years of suffering avoided per dollar spent on all four ballot initiatives, with a 90-percentile range from 0.05 years per dollar to 0.14 years per dollar.Helping egg-laying hens is, by far, the most impactful farmed animal welfare reform.Nearly all (about 99%) of the reductions in farmed-animal suffering by these four initiatives can be attributed to bans on battery cages and/or cage-free requirements.The three initiatives that impacted egg-laying hens were approximately two orders of magnitude more cost-e...