Zhai Zhao, Gao Shirong, Shan Ming
School of Transportation, Changsha University of Science and Technology, 960 South Wanjiali Road, Changsha, China.
Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, Changsha University of Science & Technology, Changsha, China.
Sci Rep. 2025 Jul 1;15(1):22428. doi: 10.1038/s41598-025-06547-z.
Environmentally responsible behavior (ERB) of contractors in megaprojects is crucial for promoting sustainability, but how to trigger and predict it remains unclear. This study integrates moral identity and corporate green culture into the theory of planned behavior (TPB) to develop an extended TPB (ETPB). Based on a questionnaire survey (N = 181) from Chinese megaprojects, we found that (1) contractors' attitudes, subjective norms, and perceived behavioral control positively influence their intentions to engage in ERB; (2) perceived behavioral control, intentions, moral identity, and corporate green culture positively influence ERB; and (3) the explanatory power (R) and predictive power (PLS, CVPAT) of the ETPB model are superior to those of the TPB model. These findings offer novel theoretical insights through the ETPB model in the context of megaprojects and provide practical guidance for promoting ERB among contractors.
大型项目中承包商的环境责任行为（ERB）对于促进可持续发展至关重要，但如何引发和预测这种行为仍不清楚。本研究将道德认同和企业绿色文化整合到计划行为理论（TPB）中，以开发扩展的TPB（ETPB）。基于对中国大型项目的问卷调查（N = 181），我们发现：（1）承包商的态度、主观规范和感知行为控制对他们参与ERB的意图有积极影响；（2）感知行为控制、意图、道德认同和企业绿色文化对ERB有积极影响；（3）ETPB模型的解释力（R）和预测力（PLS，CVPAT）优于TPB模型。这些发现通过ETPB模型在大型项目背景下提供了新颖的理论见解，并为促进承包商的ERB提供了实践指导。
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