Ethnic Stereotypes in Language: A Validated Sentence–Word Priming Stimulus Database for EEG/Neuroimaging, Behavioral, and LLM Research

All three conditions are matched on the following variables: • Sentence length in characters • Sentence length in words • Terminal word length in characters • Lexical frequency of the terminal word • Grammatical category and imageability of the terminal word • Gender of the protagonist (male / female / mixed) Intended uses • EEG/ERP studies of stereotyping, social prediction, and language processing (N400, LAN, LP components) • Neuroimaging (fMRI/MEG) studies of social cognition and predictive coding • Behavioral studies of implicit ethnic bias, semantic priming, and accent perception • Training, testing, or probing Large Language Models (LLMs) on social bias, world knowledge and stereotype content Availability of auditory stimuli A professionally recorded auditory version of these stimuli (sentences spoken with native-accented voices across the seven ethnic/accent categories) is also available.

Auditory stimuli are not shared openly, but may be made available to research groups for non-profit academic purposes under a co-authorship agreement: groups wishing to use the auditory materials in a study intended for publication are invited to contact the authors to discuss the terms of scientific collaboration, which will include co-authorship on any resulting paper. To inquire, write to: mado.proverbio@unimib.it