“…Take, for example, the popular forgetting phenomenon retrieval-induced forgetting. Retrieval-induced forgetting was originally demonstrated with words (Anderson et al, 1994), but has been shown to generalize to a variety of materials such as visual-spatial objects (Ciranni & Shimamura, 1999), eyewitness memories (Shaw, Bjork, & Handal, 1995), motor memory (Tempel, Aslan, & Frings, 2016), and location information (Gómez-Ariza, Fernandez, & Bajo, 2012). Given that the above-named theories of forgetting attempt to account for retrieval-induced forgetting, the many stimulus types susceptible to this forgetting effect may be a liability in elucidating the underlying mechanism.…”