Applying evolutionary methods in economics: progress or pitfall?

The Darwinian theory of evolution has arguably become an important building block for experimental and theoretical economists. According to Burnham (J Econ Behav Org 90:S113–S127, 2013), it is possible to formulate novel hypotheses and predictions about human preferences, on the basis of what patterns of behavior would have been adaptive in the ancestral environment. After clarifying two theoretical concepts, the Adaptively Relevant Environment and fitness maximization, I argue that multiple scientifically plausible hypotheses about human preferences are compatible with evolutionary models that target behavior. Moreover, I propose a refinement of Burnham’s method based on theoretical resources provided by the indirect evolutionary approach. Economists apply or build evolutionary models of their own that target particular features of human psychology and cognition. Such models may reduce the number of plausible hypotheses to allow for rigorous scientific testing in laboratory or field experiments.

     

The role of perceived justice in buyer-supplier relationships in times of economic crisis

This paper explores the importance of perceived organisational justice in times of crises, when supplier commitment has the potential to offset the negative impact of external pressures on business performance. We draw data from a survey of 117 suppliers of a major Greek grocery retailer. The grocery retail sector in Greece suffered considerably during the peak of the financial crisis, in 2016, providing a unique opportunity to explore the role of fairness in buyer-supplier relationships in times of crisis. The paper makes a distinct contribution by exploring the role that POJ plays in mitigating the impact of a financial crisis on suppliers’ performance, both operational and financial. Moreover, we explore the role of commitment as a mediator between POJ and performance, in the specific context of a financial crisis. Our findings indicate that organisational justice influences firm performance through commitment and that the financial crisis moderates the relationship.