The earliest academic studies of contemporary Paganism were published in the late 1970s and 1980s by scholars like Margot Adler, Marcello Truzzi and Tanya Luhrmann, although it would not be until the 1990s that the actual multidisciplinary academic field of Pagan studies properly developed, pioneered by academics such as Graham Harvey and Chas S. Clifton. Increasing academic interest in Paganism has been attributed to the new religious movement's increasing public visibility, as it began interacting with the interfaith movement and holding large public celebrations at sites like Stonehenge.