However, the results of rehearsal a

However, the results of rehearsal activities have been ambiguous. While rehearsing the same tasks as the assigned tasks has been found to affect language production positively in terms of lexical complexity (Bygate, 1996; Gass et al., 1999), fluency (Bygate, 1996; Bygate, 2001; Lynch & Maclean, 2001), and accuracy (Bygate, 1996; Gass et al., 1999; Lynch & Maclean, 2001), rehearsing a similar task to the assigned task has not been shown to enhance language production in TBLL (Gass et al., 1999; Bygate, 2001). Even though rehearsal of similar tasks did not show positive effects, observation of similar tasks performed by native speakers in the format of subtitled videos has not been investigated yet. Observing subtitled similar task videos may enhance language production in TBLL because observing subtitled videos has been reported to enhance language production (Garza, 1991;