“…Both of these studies focused on a currently obsolete credential now known as the Legacy LEED AP following the transition to a new credentialing scheme in 2009 by the Green Building Certification Institute. The former study, which quantified the impact of holding this credential on general contractor employees, yielded mixed results regarding the effectiveness of the certification to enhance their career (Bruce et al, 2009). Though 70% of general contractors disagreed that the certification had a positive impact on their salary or opportunities for promotion, 58% felt as though the certification helped them to earn recognition for their ability to perform their job, and 72% felt that becoming a LEED AP served to increase their prestige among superiors, along with others inside their organization.…”