In: Journal of Economic Issues, 41(2): 391-398.
When outlining their research methodology, the authors should state precisely how many interviews they conducted. It looks as if one interview was done with the cluster manager in the six regions, but the authors also claim to have interviewed ‘the presidents of cluster firms’ (p. 8, line 20) without indicating the number. Given the conceptual framework outlined in figure 1, one might also wonder why national policymakers, i.e. representatives of the respective national cluster programmes, have not been surveyed as well.