Are the HDI dimensions weighted equally?

The HDI assigns equal weight to all three dimension indices; the two education sub-indices are also weighted equally. The choice of weights is based on the normative judgement that all three dimensions are equally important. Research papers that provide a statistical justification for this approach include Noorkbakhsh (1998) and Decanq and Lugo (2009). The HDI has more equal ranges of variation of dimension indices than the old one – before 2010, implying that the effective weighting is more equal than it was before.