“…There now is much evidence that the mere act of making immediate JOLs impacts memory performance (Double & Birney, 2019). An increasing number of studies show that making JOLs enhances recall performance for related word pairs compared to studying for a comparable duration ( positive reactivity ; Halamish & Undorf, 2022; Janes, Rivers, et al, 2018; Myers et al, 2020; Soderstrom et al, 2015; Tauber & Witherby, 2019; Witherby & Tauber, 2017), whereas making JOLs for unrelated word pairs has either no effect (e.g., Soderstrom et al, 2015) or impairs recall ( negative reactivity ; Janes, Rivers, et al, 2018; Mitchum et al, 2016). Furthermore, making JOLs enhanced free-recall and recognition performance for single words (Myers et al, 2020; Senkova & Otani, 2021) and long-term learning of related pairs (Witherby & Tauber, 2017).…”