“…Materials development research has established the effects of other-domain work on textbook creation (see, e.g., Hatch, 2007; J. Lee et al, 2021; Reid, 1995; Sternberg & Hayes, 2018), but few studies, apart from Atkinson (2021a), have indicated how this work impacts ongoing textbook production, and few have tracked authors’ processes during open textbook-writing episodes (see Atkinson & Corbitt, 2022, for an exception).…”