“…Across a wide range of academic disciplines, we only identified five experiments with students fully randomized to an exam wrapper or comparison group, and only two of these studies showed a positive effect of using exam wrappers (Chen et al, 2017; Edlund, 2020), while the other three found no benefit (Chambers, 2020; Craig et al, 2016; Stephenson et al, 2017). There are also quasiexperimental studies of exam wrappers that vary in methodological rigor, and these too show mixed results (Grewe et al, 2021; Hodges et al, 2020; LaCaille et al, 2019; Rosales et al, 2019; Soicher & Gurung, 2017; Thompson, 2012). Moreover, the implementation of wrappers varies across studies—of the two fully randomized experiments that did find a benefit of exam wrappers, one used an exercise that focused on reflecting on previous performance and occurred close after an exam in a psychology course (Edlund, 2020), while the other focused on planning for future exams and occurred shortly before the next exam in a statistics class (Chen et al, 2017).…”