In-Depth Look at Word Filling Societal Bias Measures

Abstract: Many measures of societal bias in LLMs have been proposed in recent years. A popular approach is to use a set of word filling prompts to evaluate the behavior of the LLMs. In this work, we analyze the validity of two such measures -- StereoSet and CrowS-Pairs. We show that these measures produce unexpected and illogical results when appropriate control group samples are constructed. Based on this, we believe that they are problematic and using them in the future should be reconsidered. We propose a way forward with an improved testing protocol. Finally, we also introduce a new gender bias dataset for Slovak.