Soledad,


Rated grids feature Pearson correlations. If you want more information
than these 2 sites provide

http://www.pcp-net.org/encyclopaedia/correlations.html

http://www.pcp-net.org/encyclopaedia/sing-val.html

Try:

Slater, P, The measurement of intrapersonal space by grid technique. Vol.
2: Dimensions of intrapersonal space, 1977

or

contact one of the grid program developers (e.g Richard Bell or James
Grice) they could answer this for you. Enquire Within also has an e-mail
address: john@...


Bob