Supplier selection is a critical decision with sustainability impacts in global supply chain. This study explores how different dimensions of a supplier's sustainability can affect managers' evaluation and consequent selection of a supplier. An experimental research method is applied to examine a series of hypotheses that integrate the sustainable supply chain management literature and the behavioural decision-making literature. Data from a total of 857 valid sets of responses in three scenario-based experiments were used to explore the impacts of long-term and short-term relationships with the supplier, and the length of work experience of the supply chain manager as factors in managers' selection decisions. The findings show that managers favour sustainability dimensions in their evaluation and intention to select a supplier. Moreover, managers react more negatively to a low level of sustainability than they react positively to a high level of sustainability. The economic dimension of sustainability has the strongest impact of the three dimensions on managers' supplier evaluation and selection intent. Furthermore, where the manager and supplier have been in a long-term relationship, there is an interaction effect between managers support for each of the dimensions and the effect of sustainability on supplier evaluation and selection. However, this moderating effect is less significant in a short-term relationship and becomes insignificant after accounting for the impact of length of work experience of the decision-makers. The experimental research approach and results provide managerial implications for effective allocation of resources, as well as policy suggestions for the broader operations and supply chain systems.

选择供应商是一项至关重要的决定，对全球供应链的可持续发展具有影响。这项研究探讨了供应商可持续性的不同维度如何影响经理的评估和对供应商的选择。实验研究方法用于检验一系列假设，这些假设将可持续供应链管理文献和行为决策文献结合在一起。使用来自三个基于场景的实验中总共857个有效响应集的数据来探讨与供应商的长期和短期关系的影响，以及作为管理者因素的供应链管理者的工作时间长短的选择决定。调查结果表明，管理人员在评估和选择供应商的意图中倾向于可持续性方面。此外，管理人员对低水平的可持续性的反应较否定，对高水平的可持续性的反应则较积极。可持续性的经济因素对经理的供应商评估和选择意图的三个方面的影响最大。此外，在经理和供应商建立长期关系的情况下，经理对每个维度的支持与可持续性对供应商评估和选择的影响之间存在相互作用。但是，这种缓和作用在短期关系中影响不大，而在考虑了决策者的工作年限的影响后，这种影响就变得微不足道了。实验研究方法和结果为有效分配资源提供了管理上的意义，