Research Reports

Animal welfare campaigns

• The State of Slaughter: Violations at Poultry Plants in 2021
• OWA Cage-free Egg Fulfillment Report
• White Striping Disease in Supermarket Chicken
• Eggsposé: Companies Profiting from Packed Cages and Empty Promises
• The Price of a Slice: Animal Cruelty in the Pizza Sector
• Prevalence of Stunning Methods in Broiler Chicken Slaughter in the United States
• Inspiring Action for Farmed Fishes: Finding Messaging that Motivates
• US Egg Production Data Set
• Measuring Better Chicken Commitment–Compliant Chicken Supply

Advocacy

• How Ranking of Advocacy Strategies Can Mislead
• The Unique Challenges of Research in Farm Animal Advocacy

Diet change interventions

• Effectiveness of a Theory-Informed Documentary to Reduce Meat and Animal-Product Consumption: Three Randomized Controlled Experiments
• Interventions to Reduce Meat Consumption by Appealing to Animal Welfare: Meta-analysis and Evidence-Based Recommendations
• Which Request Creates the Most Diet Change?: A Reanalysis
• Which Leaflet is More Effective: A Reanalysis
• Which Farm Animal Photos Are Most Likely To Inspire People To Eat Vegan: A Reanalysis
• Is Animal Cruelty or Abolitionist Messaging More Effective: A Reanalysis
• Is One Message or Multiple Messages More Effective for Inspiring People to Reduce Meat Consumption?†
• What Elements Make a Vegetarian Leaflet More Effective?†
• Which Factory Farming Video is More Effective?†

Plant-based alternatives

• Milking it: Exploring the Impact of Plant-Based Milk in the US
• Which Vegan Meals Do Omnivores Find Most Appetizing and Accessible?†

Methods

• Surveying US College and University Dining Services for Potential Collaboration on Diet Change Research 2017-2018
• Measuring Change in Diet for Animal Advocacy
• The Trouble With Significance Testing

Miscellaneous

• Diet Change and Demographic Characteristics of Vegans, Vegetarians, Semi-Vegetarians, and Omnivores†
• What Cover Photos Make People Most Interested in Reading Pro-Veg Literature?†

† Indicates legacy research, which may not meet the current quality standards of The Humane League. We recommend cautious interpretation of these results and reanalysis of the raw data when possible.