“…However, based on our previous experience (e.g., Chiou, 2022aChiou, , 2022b, eight practice trials (with replay and feedback) should be sufficient for participants to understand and to perform the task properly. Moreover, in one of our previous studies (Chiou & Schack, 2023), participants performed a similar change-detection task under a dualprocessing condition for 288 trials (much more than the number of trials performed in the present study), but no learning effect was found across two experiments (N = 54 in total). The finding suggests that participants' sensitivity to spatial/temporal changes of the current stimulus set was relatively stable, and therefore the learning effect observed here should be attributed more to the development of a processing strategy than the increase of familiarity to the task.…”