Tim van der Zee is a PhD Student at Leiden University, The Netherlands. He studies how people learn from instructional videos in open online education. He is also strongly interested in meta-scientific efforts to estimate and increase the reliability of (education) science. As such, he advocates for increasing the transparency of scientific research, to systematically engage in replication efforts, and to make substantial changes to the publication process. For his efforts to identify large amounts of errors in the scientific literature he was named ‘most important researcher of the year 2017’ at Leiden University.