The exact origins of the New Age movement remain an issue of debate; Melton asserted that it emerged in the early 1970s, whereas Hanegraaff instead traced its emergence to the latter 1970s, adding that it then entered its full development in the 1980s. This early form of the movement was based largely in Britain and exhibited a strong influence from Theosophy and Anthroposophy. Hanegraaff termed this early core of the movement the "New Age sensu stricto", or "New Age in the strict sense".