When did Barbados achieve full internal self-government?

Barbados achieved full internal self-government in 1961. This milestone followed a period of significant social and political reform during the 1940s and 1950s, which included the adoption of universal adult suffrage in 1950 and the rise of mass political organizations that curtailed the power of the traditional planter-merchant elite.1

Following this achievement of internal self-governance, the country eventually moved toward full independence, which was officially attained on November 30, 1966.21