In plain words: A set of small puzzle tasks teaches a model a made-up rule from examples, then tests it to reveal hidden habits. This exposed a tendency to assume statements stay true when a word is swapped for a broader one, which plain questioning barely showed.
Abstract · Uncovering Implicit Bias in Large Language Models with Concept Learning Dataset
We introduce a dataset of concept learning tasks that helps uncover implicit biases in large language models. Using in-context concept learning experiments, we found that language models may have a bias toward upward monotonicity in quantifiers; such bias is less apparent when the model is tested by direct prompting without concept learning components. This demonstrates that in-context concept learning can be an effective way to discover hidden biases in language models.
Leroy Z. Wang
arXiv:2510.01219 · cs.CL, cs.AI · submitted Sep 21, 2025 · updated Nov 26, 2025
abstract · pdf · html · Presented at EurIPS 2025 Workshop - Unifying Perspectives on Learning Biases (UPLB) https://sites.google.com/view/towards-a-unified-view