Every Token Counts: Exact Likert-Scale Distributions for Measuring LLM Attitudes and Biases

• URL: http://arxiv.org/abs/2608.10503v1
• Date: Tue, 11 Aug 2026 05:20:06 GMT
• Title: Every Token Counts: Exact Likert-Scale Distributions for Measuring LLM Attitudes and Biases
• Abstract summary: We introduce an analytically exact framework for the controlled behavioral evaluation of Large Language Models (LLMs)<n>We replace unstructured prompting with fully crossed factorial experiments to systematically isolate causal main and interaction effects.<n>We derive a multivariate ordinal consensus metric and a distributional ANOVA to process these PMFs analytically.<n>We validate our framework with a case study on consumer ethnocentrism across five LLMs, demonstrating how our approach isolates systemic country-of-origin biases that aggregate benchmarks otherwise obscure.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: As Large Language Models (LLMs) are increasingly deployed as autonomous agents, accurately evaluating their latent values and biases is critical. The NLP community typically evaluates models using large, unstructured benchmarks. While effective for general capabilities, these datasets fundamentally conflate causal mechanisms: even when an aggregate bias is detected, unstructured evaluations cannot disentangle whether it stems from baseline traits, contextual confounders, or complex interactions. To address this, we introduce an analytically exact framework for the controlled behavioral evaluation of LLMs. We bridge human psychometrics with LLM mechanics by resolving gaps in design, measurement, and analysis. First, we replace unstructured prompting with fully crossed factorial experiments to systematically isolate causal main and interaction effects. Second, we eliminate Monte Carlo text sampling noise by operating directly on exact, token-level Probability Mass Functions (PMFs). Third, we derive a multivariate ordinal consensus metric and a distributional ANOVA to process these PMFs analytically. We validate our framework with a case study on consumer ethnocentrism across five LLMs, demonstrating how our approach isolates systemic country-of-origin biases that aggregate benchmarks otherwise obscure.

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