based on a structured questionnaire about the concepts previously
reviewed in Section 2 that were elaborated according to the
recommendations contained in Synodinos (2003).
The questionnaire contains information on the characterization
of respondent companies and four blocks of assertions: one for the
“Environmental Management” construct, one for “Lean
Manufacturing”, one for “Human Resources” and the last for
“Operational Performance”. Altogether, the questionnaire presents
eight assertions about environmental management (one for each
environmental practice), nine about the lean manufacturing
construct, five about human resource management and six about
operational performance (one for each measure of operational
performance). The first version of the questionnaire was submitted
for content validation through an analysis of five researchers in the
area, as well as the adjustment to conceptual presuppositions. In its
final version, the questionnairewas hosted in a virtual environment
specifically elaborated for this research.