The Socialist Economics of Karl Marx and His Followers' was first published in 1906, in the Quarterly Journal of Economics. It's author, Thorstein Veblen, was the son of Norwegian American immigrants. He grew up to become a prominent economist and sociologist, producing many books and articles, and is often remembered for his use evolutionary theory to develop a 20th century theory of economics. Veblen is famous for the idea of "conspicuous consumption". Conspicuous consumption, along with "conspicuous leisure", is performed to demonstrate wealth or mark social status. Veblen explains the concept in his best-known book, The Theory of the Leisure Class (1899). Within the history of economic thought, Veblen is considered the leader of the institutional economics movement. Veblen's distinction between "institutions" and "technology" is still called the Veblenian dichotomy by contemporary economists.