“…This research has produced mixed results. Some experiments have found that pretesting improves subsequent retrieval of the pretested material, but does not benefit other, non-pretested information (Carpenter, Rahman, & Perkins, 2018;Pressley, Tanenbaum, McDaniel, & Wood, 1990;Richland et al, 2009;Toftness, Carpenter, Lauber, & Mickes, 2018). Other studies, by contrast, have found that pretesting improves memory for both pretested and nonpretested information (Carpenter & Toftness, 2017), or that pretesting does not significantly benefit retrieval at all (Geller et al, 2017).…”