Table 2.

Perceptual factors of attention restoration space on the university campus.

No.	Perceptual Factors	Definitions
1	Accessibility	Easy to reach, no obstacles in space and time.
2	Visibility	The scope of landscape elements that can be seen, including spatial scale and openness.
3	Recognition	Easy to find the place and the composition of the layout is easy to understand.
4	Familiarity	The environmental characters are familiar and accessible.
5	Comfort	A comfortable environment with good landscape maintenance, such as seating, paving, lighting, etc.
6	Pleasure	Feel happier with the landscape design or the activities happened here.
7	Sense of belonging	Feel safe and feel like belong here.
8	Quietness	A sense of tranquility; the environment is quite or there are natural or pleasant sounds.
9	Exploration	Attractive and raise curious.
10	Creativity	Stimulate creative thinking.