“…These findings are, therefore, relevant to international institutions and policymakers that seek to adequately measure the intensity of corruption. Corruption indices typically rely on perception data which, if used without bias control, may give misleading results (Belousova, Goel, & Korhonen, 2014; Galtung et al, 2013; Olken, 2009). For instance, the Transparency International Corruption Index (Lambsdorff, 2005) or the World Bank Governance Indicators (Kaufmann, Kraay, & Mastruzzi, 2011) heavily draw on perception data (Olken, 2009).…”