Correcting Low-Signal Sensitivity in the Deliberative Reason Index

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1. Verfasser: Veri, Francesco
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Veröffentlicht: 2026
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author Veri, Francesco
author_facet Veri, Francesco
contents The Deliberative Reason Index (DRI) is increasingly used to assess the coherence between considerations and preferences in deliberative settings, including applications to LLM-generated data. Under low-signal conditions, however, the standard DRI can produce inflated scores by treating near-zero correlations as evidence of consistency. Monte Carlo simulations across common study designs show that this bias increases with group size and yields positive values even under random response. A modified DRI is introduced that applies a continuous penalty to low-signal correlation pairs. The modification preserves the original scale and reduces exactly to the standard DRI when substantive signal is present. A threshold sensitivity analysis identifies τ=0.2as the optimal parameter. An empirical check with archival deliberative data shows that substantive inferences remain unchanged. The modification improves the reliability and comparability of the DRI in low-signal settings.
format Preprint
id arxiv_https___arxiv_org_abs_2604_16963
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Correcting Low-Signal Sensitivity in the Deliberative Reason Index
Veri, Francesco
Human-Computer Interaction
The Deliberative Reason Index (DRI) is increasingly used to assess the coherence between considerations and preferences in deliberative settings, including applications to LLM-generated data. Under low-signal conditions, however, the standard DRI can produce inflated scores by treating near-zero correlations as evidence of consistency. Monte Carlo simulations across common study designs show that this bias increases with group size and yields positive values even under random response. A modified DRI is introduced that applies a continuous penalty to low-signal correlation pairs. The modification preserves the original scale and reduces exactly to the standard DRI when substantive signal is present. A threshold sensitivity analysis identifies τ=0.2as the optimal parameter. An empirical check with archival deliberative data shows that substantive inferences remain unchanged. The modification improves the reliability and comparability of the DRI in low-signal settings.
title Correcting Low-Signal Sensitivity in the Deliberative Reason Index
topic Human-Computer Interaction
url https://arxiv.org/abs/2604.16963