Causality is Key for Interpretability Claims to Generalise

Fuente: arXiv
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Autori principali: Joshi, Shruti, Mueller, Aaron, Klindt, David, Brendel, Wieland, Reizinger, Patrik, Sridhar, Dhanya
Natura: Preprint
Pubblicazione: 2026
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author Joshi, Shruti
Mueller, Aaron
Klindt, David
Brendel, Wieland
Reizinger, Patrik
Sridhar, Dhanya
author_facet Joshi, Shruti
Mueller, Aaron
Klindt, David
Brendel, Wieland
Reizinger, Patrik
Sridhar, Dhanya
contents Interpretability research on large language models (LLMs) has yielded important insights into model behaviour, yet recurring pitfalls persist: findings that do not generalise, and causal interpretations that outrun the evidence. Our position is that causal inference specifies what constitutes a valid mapping from model activations to invariant high-level structures, the data or assumptions needed to achieve it, and the inferences it can support. Specifically, Pearl's causal hierarchy clarifies what an interpretability study can justify. Observations establish associations between model behaviour and internal components. Interventions (e.g., ablations or activation patching) support claims how these edits affect a behavioural metric (e.g., average change in token probabilities) over a set of prompts. However, counterfactual claims -- i.e., asking what the model output would have been for the same prompt under an unobserved intervention -- remain largely unverifiable without controlled supervision. We show how causal representation learning (CRL) operationalises this hierarchy, specifying which variables are recoverable from activations and under what assumptions. Together, these motivate a diagnostic framework that helps practitioners select methods and evaluations matching claims to evidence such that findings generalise.
format Preprint
id arxiv_https___arxiv_org_abs_2602_16698
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Causality is Key for Interpretability Claims to Generalise
Joshi, Shruti
Mueller, Aaron
Klindt, David
Brendel, Wieland
Reizinger, Patrik
Sridhar, Dhanya
Machine Learning
Interpretability research on large language models (LLMs) has yielded important insights into model behaviour, yet recurring pitfalls persist: findings that do not generalise, and causal interpretations that outrun the evidence. Our position is that causal inference specifies what constitutes a valid mapping from model activations to invariant high-level structures, the data or assumptions needed to achieve it, and the inferences it can support. Specifically, Pearl's causal hierarchy clarifies what an interpretability study can justify. Observations establish associations between model behaviour and internal components. Interventions (e.g., ablations or activation patching) support claims how these edits affect a behavioural metric (e.g., average change in token probabilities) over a set of prompts. However, counterfactual claims -- i.e., asking what the model output would have been for the same prompt under an unobserved intervention -- remain largely unverifiable without controlled supervision. We show how causal representation learning (CRL) operationalises this hierarchy, specifying which variables are recoverable from activations and under what assumptions. Together, these motivate a diagnostic framework that helps practitioners select methods and evaluations matching claims to evidence such that findings generalise.
title Causality is Key for Interpretability Claims to Generalise
topic Machine Learning
url https://arxiv.org/abs/2602.16698