There are two fundamental starting points for linking integrated assessments and indicators based on two approaches to assessment. One uses expert opinion or consultation with stakeholders to produce an integrated assessment in text form and then develops indicators to explain, illustrate, and eventually complete or extend the results of the assessment. The second, more statistical approach is to assemble a set of indicators or statistics in some coherent statistical framework to produce a more numerical integrated assessment. Perhaps at some point in the future the two approaches will converge, but at present they involve different communities of natural and social scientists or statisticians.
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