실험 지시 사항을 숙지한 후 각 8시행으로 구성된 연습시행 4블록을 수행하였고 연습이 더 필요한 경우 한 번 더 연습시행을 수행하였다.
After understanding the experimental instructions, four blocks of practice trials consisting of eight trials were performed, and if more practice was needed, the practice trial was performed once more.