After the Second World War, American influence became more important and also started to influence NHH to a greater extent. Graduates and staff began to go to the US to continue their studies and work for a period, a trend that greatly increased in the 1960s and 1970s. By the early 1950s the need for a doctoral programme at NHH had grown. In 1956, NHH received permission from the Norwegian government to award doctorates and in 1957 the first doctoral candidate graduated from NHH.