“…In this research, participants first study a list of words and are later required to recall the stimuli or to discriminate them from lures (new items). Interestingly, here the pattern of results depends on the task: Low-frequency words in general are more difficult to recall but lead to better performance in a recognition task (i.e., they result in higher d’ values as calculated by signal detection theory; e.g., Cortese, Khanna, & Hacker, 2010; Gregg, Gardiner, Karayianni, & Konstantinou, 2006; Higham, Bruno, & Perfect, 2010; Yonelinas, 2002; see also Kang, Balota, & Yap, 2009, for an example of how this reverse frequency effect can be attenuated by context). Because of the importance of word frequency, no study in word recognition or memory research can afford to leave out this variable.…”