“…Probably the most prominent class of phenomena in research on peer review are biases (for an overview, see Lee et al, 2013). While some of these phenomena are well-established, uncontested, and supported by robust evidence, such as the disagreement effect, 2 others are highly contested, such as gender bias (Sato et al, 2021), 3 or there is only preliminary and suggestive evidence −, for example, on conservatism (Franzoni et al, 2021;Guthrie et al, 2018b). In addition to biases, many other supposed, corroborated, or obvious phenomena can be found in the literature, such as overburdening (Kovanis et al, 2016) or lack of transparency (Horbach et al, 2020;Ross-Hellauer, 2017).…”