Presentation given at the Data Conversations held at the Vrije Universiteit Amsterdam and organised by the VU University Library on 16 June 2021. The theme of this edition was "Enhancing transparency in research using preregistration". A recording of the presentation can be viewed on the VU University Library channel. Versions of the slides are also available on the Open Science Framework. Agenda: Ewa Miedzobrodzka, "How to increase transparency in research with pre-registration: an ERP study example" About Data Conversations Data Conversations started at the University of Lancaster in the UK. The Lancaster Data Conversations aim to bring data practitioners together to talk about how researchers create, collect, use and share data. The Data Conversations at the VU Amsterdam share the same aim and are intended to provide a forum for researchers from different subjects and disciplines to exchange practices and ideas around open data, FAIR data, research data management and related open science topics.