چکیده (انگلیسی):

This paper presents and discusses the statistical analysis of the responses from an online survey
administered to a sample of US superintendents (n=225) in an attempt to explore and authenticate the
construct validity of the ISLLC 2008 Standards through exploratory factor analysis. Using a Principal
Axis Factor method, 6 factors were extracted representative of the six ISLLC Standards. Thirteen items
loaded on the 1st factor that represented items mainly from Standards 1, 2 & 3. Standard 4 was split
between the 2nd & 6th factor and Standard 5 between factors 4 & 5. The 3rd factor consisted of 4
items from Standard 3. These results conrm to some extent the construct validity of the ISLLC 2008
Standards with the exception of Standard 6, which had only three items represented in factors 2 & 3.
Moreover, Standards 4 & 5 each exhibited two additional dimensions, which might suggest a need for
the development and adoption of supplemental footprint standards.