 This approach is particularly relevant to scoring subjective areas of knowledge that are scaled using Likert response scales, and the approach has been applied to develop scoring standards for several domains where experts are scarce.In practice, analyses have demonstrated high levels of convergence between expert and CBA standards with values quantifying those standards highly correlated (Pearson "R"s ranging from .72 to .95), and with scores based on those standards also highly correlated ("R"s ranging from .88 to .99) provided the sample size of both groups is large (Legree, Psotka, Tremble & Bourne, 2005).This convergence between CBA and expert referenced scores and the associated validity data indicate that CBA and expert based scoring can be used interchangeably, provided that the ratings data are collected using large samples of experts and novices or journeymen.