put into professional simple terms: The authors employed a twolevel confirmatory factor analysis (CFA) (also referred to as multilevel CFA) to examine the factor structure of the eight Individual/Clinical Risk items of the SAVRY. This method allows simultaneous modelling of the withinjurisdiction (individual youth) level and betweenjurisdiction (court cluster) level. In other words, they specified a latent factor at each level and modelled the factor loadings and variances accordingly. The method assesses model fit (via fit indices), factor loadings, and intercluster variance components. (While the precise software and estimation details are not captured in the openaccess summary I located, the general approach is as described.)