“…Indeed, studies have shown that processes of motivation and achievement differ substantially across students with heterogenous personal, psychosocial, and socioeconomic profiles (De Clercq, Galand, & Frenay, 2020; Martens & Metzger, 2017). Although recent work has advanced theoretical understanding of interest in science undergraduates (O'Keefe, Dweck, & Walton, 2018), operationalized science‐specific forms of interest as measurable constructs (Knetka, Rowland, Corwin, & Eddy, 2020; Lamb, Annetta, Meldrum, & Vallett, 2012), and related interest to science introductory course experiences (Erickson, Marks, & Karcher, 2020), limited existing research addresses issues associated with measuring interest. For example, many experimental and observational studies are premised on the implied assumption that interest can be measured equivalently across sampling periods (e.g., pre‐ and post‐semester) and/or student characteristics.…”