“…In contrast, high and positive correlations were found by Resti (1997), based on a sample of Italian banks, Eisenbeis et al (1999), based on bank holding company data, and Cummins and Zi (1998), based on US life insurance firm data. If we extend the scope of the analysis to include studies outside the field of financial institutions, we find more empirical evidence comparing the two types of techniques such as studies by Banker et al (1986), De Borger andKerstens (1996), Hjalmarsson et al (1996), or Resti (2000).…”