The Human Development Index (HDI) is a significant measure developed to look beyond economic growth and focus on people-centric development. It evaluates a nation's progress based on key dimensions of human well-being: a long and healthy life, knowledge acquisition, and a decent standard of living.
While the Nobel laureate economist Amartya Sen provided foundational economic and philosophical ideas related to human capabilities and freedoms, the practical conceptualization and creation of the HDI are primarily credited to Pakistani economist Mahbub ul Haq. He collaborated closely with Amartya Sen and others, including the United Nations Development Programme (UNDP), to bring the index to life starting in 1990. Mahbub ul Haq envisioned the HDI as a tool to shift the focus of development economics from national income accounting to people's well-being.
Therefore, Mahbub ul Haq is recognized as the key architect of the HDI alongside Amartya Sen's theoretical contributions.