Construct validity of some unweighted product‐count diversification measures
评估了三种简单未加权SIC连续多样化指标和一种二维分类多样化指标的构念效度，发现两种连续指标与Rumelt分类指标高度相关，适合大样本战略研究。
Abstract Construct validities are assessed for three simple‐to‐compute, unweighted, SIC‐based continuous diversification measures and a recently proposed two‐dimensional, SIC‐based categorical diversification measure. Two of the three continuous measures are found to correspond strongly to Rumelt's categorical measures, suggesting that these two objective and easy‐to‐calculate measures are better suited for large sample, strategy research than has previously been assumed. No support is found for the two‐dimensional measure.