More‐odd shifting
Subjects focused their attention on the computer screen, and subjects judged the numbers 1–9 (but not 5), as required, with a numerical duration of 1‐ and a 2‐s interval between two numbers. The task is divided into three parts: the first part, “large/small” judgment: The screen presents a black number, if the number is less than 5, press the “F” key; if the number is greater than 5, press the “L” key. The second part, “odd/even” judgment: The middle of the screen shows green numbers; if it is an odd number, press the “F” key to react; if it is an even number, press the “L” key to react. The third type is “large/small—odd/even” shifting judgment: If the presented numbers are black, “large/small” judgment; if they are green, “odd/even” judgment. Subjects were asked to press the key response as soon as possible while ensuring accuracy. The formal test was divided into six subsections, using the sequence ABCCBA. The A and B sections do not require shifting, 16 times each; the C section requires 32 shifts, which includes 16 shifts. Before the formal start of the exercise, the A and B segments were practiced 8 times each, and the C segment was practiced 16 times.