Third, several and different single organisations
may contribute to a general effect (see
Figure 26.4). Environmental policies are implemented
by a whole range of agencies (inspection,
subsidies, direct intervention, communication,
etc.), which may be disconnected. Micro performance
should be consolidated at the policy level.
But defining the level of attribution of separate
well performing agencies to a general policy
effect is impossible. Therefore, performance
measurement systems should be developed at the
level of a substantive policy field (meso), and at a
single organisational level (micro). Obviously,
government wide indicators (macro) are also
indispensable and are developed in several
OECD countries (US, Canada, Australia).