This is a publication package for the article 'Familiarity and Audience Effects on Giving: A Functional Magnetic Resonance Imaging Study', which can be found here: <br><a href="https://www-mitpressjournals-org.eur.idm.oclc.org/doi/abs/10.1162/jocn_a_01568">https://www-mitpressjournals-org.eur.idm.oclc.org/doi/abs/10.1162/jocn_a_01568</a><br><div><br></div><div>This publication package contains: 1) a postprint of the article, 2) a README file with information about the study, and 3) the approved ethics protocol. </div>