photo_camera Jacy Reese Anthis / Midjourney
the top half of the image has a human forearm of flesh and blood reaching from the upper left stretched all the way to the right edge. the bottom half of the image has a robotic hand of silicon and wires reaching from the bottom right stretched all the way to the left edge. in natural relaxed postures, highly abstract water color of deep blue and teal even in the human arm, in the style of modern art --ar 16:5 --v 8.2
Substratism: Conceptualizing and Measuring Moral Bias Against AI
Ali Ladak
Researcher
Janet Pauketat
Research Fellow
Jacy Reese Anthis
Co-Founder
Matti Wilks
Advisory Board Member
November 12, 2026

We are pleased to announce our latest peer-reviewed publication, “Substratism: Conceptualizing and Measuring Moral Bias Against AI” in Computers in Human Behavior.

Abstract

Artificial intelligence systems (AIs) are increasingly taking on social roles, such as virtual coworkers and personal companions. Yet people grant AIs little moral concern, even when they are described as indistinguishable from humans. We conceptualize this bias as substratism: the moral devaluation of AIs based on the non-biological substrate that underlies their cognitive processes and makes up their broader physical form (e.g., silicon and wires rather than flesh and blood). Across five preregistered studies (N = 2,129), we introduce substratism as a psychological construct and develop and validate a scale to measure it. In Study 1, we found that substratism is best captured by a unidimensional factor structure, and we reduced a large initial item pool into an eight-item scale. Studies 2 and 3 confirmed the scale's factor structure with independent samples and showed that substratism is correlated with some AI-related beliefs and behaviors, such as perceived threat from AI and interaction with AI. However, it is weakly correlated or uncorrelated with established prejudices and their underlying causes, suggesting that substratism has some unique psychological explanations. Studies 4 and 5 showed that substratism is associated with relevant outcomes: prioritizing humans and non-human animals over AIs in moral dilemmas and charity donation decisions, and choosing to learn about an AI rights charity and its petition. Overall, our findings suggest that substratism is a distinct, measurable construct that varies widely across individuals, and we provide a concise, validated scale to capture and quantify this bias against increasingly advanced AI systems.

The paper is available open access on the journal website: https://www.sciencedirect.com/science/article/pii/S0747563226002177


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