If you find any of this useful, please consider donating via PayPal to help keep this site going.

Email news@statisticool.com to sign up to receive news and updates

Personal Space


If a person decides to sit next to you, on average do they sit so that their legs are touching yours? No, of course not, that would be rather odd. We need our space.

Apparently, so do all animals that I observe. Check out, for example, this picture I took of birds on an overhead wire

Notice that some birds are very close together, while some are farther away. Let's say we can measure the space between them all, which we probably can since that doesn't seem that difficult to do, especially from a photograph.

If there are N birds on a wire, there are N-1 measurements. Let the average of these measurements be Xa. How does Xa change as N increases? What is the distribution of Xa? Do Xa change given the species of bird (or any other animal)? Or are the Xa pretty constant relative to the size of the animal?

How is this related to the concepts of intimate, personal, social, and public space? Do the animals sitting on the ends or those with large distances between their neighbors exhibit antisocial behavior? Note that someone has to be on the end. How about vertical distance? Do the birds on the higher wires have a higher status than the ones below?

Well, there is nothing new under the sun. Apparently some of this was discussed in 2009 by the Czech mathematical physicist Petr Seba. See his "Parking and the visual perception of space" paper for some interesting details!

Please anonymously VOTE on the content you have just read:


If you enjoyed any of my content, please consider supporting it in a variety of ways:

AFFILIATE LINK DISCLOSURE: Some links included on this page may be affiliate links. If you purchase a product or service with the affiliate link provided I may receive a small commission (at no additional charge to you). Thank you for the support!