“…Factors investigated in the literature as potential modulators of L2-L1 priming While there is consensus that L2-L1 priming effects are notably less robust than their L1-L2 counterparts, effect sizes have varied considerably across studies, which range from null effects (e.g., Gollan et al, 1997;Grainger & Frenck-Mestre, 1998;Xia & Andrews, 2015) to significant L2-L1 priming (e.g., Duyck & Warlop, 2009;Lee, Jang, & Choi, 2018;Lijewska, Ziegler, & Olko, 2018;Nakayama et al, 2016). Although these studies have investigated a substantial number of factors potentially involved in L2-L1 priming effects (e.g., L2 proficiency, prime duration, word frequency, or the dominant language in the participants' environment, among others) results are mixed for all of these variables.…”