Physical activity, attention level, and demographics per self-report
To have a complete understanding of the subjects’ individual profiles and their ability to perform daily behavioral activities, demographic and behavioral variables were assessed through a questionnaire, which the teacher in charge of the subject’s classroom was asked to fill out objectively and realistically. The questionnaire includes the following aspects. (A) Personal and family information: age of child, education level of parents, family economic status, and whether or not the child is an only child. (B) Daily behavior survey: daily concentration in class (rating: a. poor; b. generally poor c. better; d. good), number of physical activities during class each week (rating: a. inactive; b. 1 time; c. 2–3 times; d. 4–5 times; e. 6–7 times), number of times viewing videos or pictures of the natural environment each week (rating: a. no viewing; b. 1 time; c. 2–3 times; d. 4–5 times; e. 6–7 times), duration of each viewing (rating: a. 2–5 min; b. 5–10 min; c. 10–15 min; d. 20 min or above), and level of greenery (e.g., lawn, trees, other vegetation) in or around your garden (rating: a. very good; b. good; c. average; d. poor; e. very poor). The experiment could not begin until all questionnaires were completed.