“…In various ways, if they are flawed measures, this may negatively impact use. There is a literature investigating the measurement properties of global observation protocols (Bell et al, 2014;Campbell & Ronfeldt, 2018;Cohen & Goldhaber, 2016;Gitomer et al, 2014;Humphry & Heldsinger, 2014;Liu et al, 2019;McCaffrey et al, 2015;White, 2018;White et al, 2021), and some of that literature offers very sharp critique (Kelly et al, 2020). To describe just one concern, scores on the various sub-domains of global protocols, ostensibly important to providing teachers useful, domain-specific feedback, are not anywhere near as separable in practice as the structure of the protocols would make them out to be (Aucejo et al, 2022;Humphry & Heldsinger, 2014;Liu et al, 2019;McCaffrey et al, 2015).…”