Hello Professor,

Have you come across this:

FACES III (Family Adaptation and Cohesion Scales)

http://clas.uiuc.edu/special/evaltools/cl00945.html

Very best wishes,

Mary

Dear Filippo,

"The Family Climate Scales—Development of a New Measure for Use in Family Business Research" may interest you.

ink.springer.com/article/10.1007/s11187-010-9268-5

http://onlinelibrary.wiley.com/doi/10.1111/j.1540-6520.2005.00082.x/full

Article The Family Climate Scales Development of a New Measure for U...

The Inclusion of Other in Self (IOS) scale. 

The Family Solidary multidimensional scale. See A. Lownestein on this:

http://www.un.org/esa/socdev/unyin/documents/egm_unhq_oct07_ariela_lowenstein.pdf

The Family Environment Scale (FES) is a 90-item scale with 10 subscales, one of which measures family cohesiveness. You do not have to use the entire scale - choose the subscales which are relevant to your work. You can read about it in:

 Moos (1990): doi 10.1111/j.1545-5300.1990.00199.x