Personal Space: (distance example N-America)

Intimate distance – 6 to 18 inches (15-45cm)
This level of physical distance often indicates a closer relationship or greater comfort between individuals. It often occurs during intimate contact such as hugging, whispering, or touching.

Personal distance – 1.5 to 4 feet (45-120cm)
Physical distance at this level usually occurs between people who are family members or close friends. The closer the people can comfortably stand while interacting can be an indicator of the intimacy of the relationship.

Social distance – 4 to 12 feet (1,20m-3,60m)
This level of physical distance is often used with individuals who are acquaintances. With someone you know fairly well, such as a co-worker you see several times a week, you might feel more comfortable interacting at a closer distance. In cases where you do not know the other person well, such as a postal delivery driver you only see once a month, a distance of 10 to 12 feet may feel more comfortable.

Public distance – 12 to 25 feet (3,50-7,50m)
Physical distance at this level is often used in public speaking situations. Talking in front of a class full of students or giving a presentation at work are good examples of such situations.

High and Low Territoriality:

Some people are more territorial than others with greater or lesser concern for ownership