In 1999, Chartrand and Bargh first demonstrated that humans have a natural tendency to mimic one another. The Chameleon Effect, named after this phenomenon, refers to “nonconscious mimicry of the postures, mannerisms, facial expressions, and other behaviors of one's interaction partners, such that one's behavior passively and unintentionally changes to match that of others in one's current social environment” (Chartrand & Bargh, 1999, p. 893). Since then, a lot of research has been conducted in the field of automatic mimicry (e.g., Lakin & Chartrand, 2003; Lakin et al, 2003; Mühlberger et al, 2015, Hogeveen et al, 2015; Kot & Kulesza, 2016). In Study 1 of the original paper, mimicry occurred even among strangers without an active goal to affiliate with the interaction partner. We are currently attempting to replicate Chartrand and Bargh’s Study 1. The experiment is pre-registered via the open science framework (https://osf.io/7weum) and data collection has begun on 28 November 2022.