The animal rights movement brings moral clarity and emotional resonance to the debate over how and to what extent animals deserve legal protection. But how effective has the movement been in prompting legal reforms or otherwise changing animals’ lives for the better? That’s the central question of a new book, ‘Empirical Animal Law: Testing the Assumptions of a Movement’. Based on both the co-authors’ own research and a review and analysis of the literature, the book examines people’s perceptions of animal suffering; which messages and messengers persuade them, and why; and when well-intentioned strategies do not produce the desired results, and why not.
NORTHWESTERN SCHOOL OF LAW: The animal rights movement brings moral clarity and emotional resonance to the debate over how and to what extent animals deserve legal protection in a variety of contexts, from the conditions of industrialized agriculture, to their use in medical research, to the abuse and neglect of household pets. But how effective has the movement been in prompting legal reforms or otherwise changing animals’ lives for the better?
That’s the central question of a new book, “Empirical Animal Law: Testing the Assumptions of a Movement,” co-written by Northwestern Pritzker School of Law professors David Dana and Janice Nadler, along with Justin Marceau, professor at the University of Denver’s Sturm College of Law (Cambridge University Press, 2026).
The book examines the movement’s assumptions and uses empirical, data-driven methods to test whether those assumptions bear out, says Nadler, Nathaniel L. Nathanson Professor of Law, who holds a PhD in social psychology as well as her JD.
“The basic question that we think animal advocates and animal law scholars have not really been asking is, ‘How do we know that the strategies that have been used actually help animals’?” she says. “Moral convictions don’t tell us what works. Does a particular law, or lawsuit, or protest, or message help protect animals? That’s the empirical part.”
Based on both the co-authors’ own research and a review and analysis of the literature, the book examines people’s perceptions of animal suffering; which messages and messengers persuade them, and why; and when well-intentioned strategies do not produce the desired results, and why not. Individual chapters look at reforms to factory farming, criminal punishment, litigation strategies, protests, and the backlash they sometimes provoke, and the moral framing of these issues.
Among the questions the book explores: Does increasing criminal punishment for animal cruelty reduce animal suffering generally? Does describing an animal as “intelligent” make people care more about its treatment? And when do unsuccessful lawsuits nonetheless help change public opinion?…
The book’s intended audience spans not only animal law scholars, students and advocates, but also lawyers, policymakers and social scientists, Nadler says. She also hopes the book spurs additional research to answer the questions it poses.
“We’re aiming for social scientists interested in law and social movements more broadly,” she says. “We’re hoping that the book speaks to anybody interested in how any reform movement learns from evidence. It’s this challenge of connecting moral urgency with empirical self-examination. And that’s not unique to animal law’. SOURCE
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