Nicholas Kaldor, Baron Kaldor (born Káldor Miklós) (12 May 1908 – 30 September 1986) was a Cambridge economist in the post-war period. He developed the "compensation" criteria called Kaldor–Hicks efficiency for welfare comparisons (1939), derived the cobweb model, and argued for certain regularities observable in economic growth, which are called Kaldor's growth laws.