This paper presents a contextualized version of the Personalized Implicit Association Test (P-IAT), and employs it alongside an express measurement to examine attitudes towards varieties of Dutch in formal vs. informal settings. After decades of relative methodological stagnation, language attitude research is w itnessing an influx of new experimental methods originally developed in social psychology. One such measure is the Personalized Implicit Association Test (P-IAT), a reaction-time-based method that measures the association between two concepts. The P-IAT has been used successfully to measure language attitudes, yet presents a number of challenges, like the fact that it measures attitudes void of linguistic or interactional context. This article aims to address that challenge and introduces a contextualized version of the P-IAT, which was used alongside an explicit measurement to explore attitudes towards varieties of Dutch in formal vs. informal settings. While the explicit attitudes show the expected pattern of preference for the standard variety in formal contexts, results from the implicit measurement are not as clear-cut. We discuss potential explanations for these findings and reflect on consequences for future sociolinguistic research using the P-IAT. (Personalized Implicit Association Test (P-IAT), context dependence of language attitudes, sociolinguistics)