We present a contribution to the Italian validation of the scale of Pierce Van Dyne e Cummings (1992) concerning the organizational ownership. This construct even internationally widely adopted is mostly absent in the scientific Italian debate. Using data from a sample of 598 Italian employees, was studied both the internal and external validity of the version with seven items that of the one with four. The results showed better psychometric properties of the shorter version and good evidence with regard to internal and external validity
