Big social concepts like well-being nest four or more hierarchical levels

Evidence

The OECD distinguishes between “quality of life” and “material conditions” as two higher-level dimensions which themselves constitute “human well-being.” So well-being is a four-level concept (see OECD 2015, figure 1.1, “The OECD framework for measuring well-being”). Four levels or more is not uncommon for these big concepts; for another example see the discussion of the Multidimensional Poverty Index (MPI) below. — Gary Goertz, Social Science Concepts and Measurement, 363

Categorization

• DEFINE: Concretely specifies what ‘levels of a concept’ means via the OECD well-being framework: dimensions, sub-dimensions, indicators.
• ADDENDUM: Complements the trees-as-infrastructure piece’s structural logic — a concept index and a grafted root system are both multi-level architectures where the top depends on hidden lower tiers.