Karl Gunnar Myrdal (Swedish: [ˈmyːɖɑːl]; 6 December 1898 – 17 May 1987) was a Swedish economist and sociologist. In 1974, he received the Nobel Memorial Prize in Economic Sciences with Friedrich Hayek for their work in the theory of money and economic fluctuations. He was best known in the United States for his study of race relations, which is seen in his book An American Dilemma: The Negro Problem and Modern Democracy.