The income component of the GDI can be criticized for the crude way in which it is computed. What would be the justification for such a computation?

The income component of the GDI is a proxy to command over economic resources, rather than a proxy for standard of living components, such as nutrition, clothing and shelter. Wages in all sectors, rather than non-agricultural wages only, are used to impute the income value for males and females. It also focuses on income gaps in a way similar to the focus on gender gaps in other HDI components.