Historically, the words
religious and
spiritual have been used synonymously to describe all the various aspects of the concept of
religion. However, religion is a highly contested term with scholars such as
Russell McCutcheon arguing that the term "religion" is used as a way to name a "seemingly distinct domain of diverse items of human activity and production". The field of
religious studies does not even agree on a single definition of religion, and because spirituality overlaps with it in many ways, there is also no consensus on the definition of spirituality. The specific expression was used in several scholarly works, including an anthropological paper in 1960 and in Zinnbauer et al.'s seminal paper "Religiousness and Spirituality: Unfuzzying the Fuzzy". SBNR as a movement in America was delineated by author Sven Erlandson in his 2000 book
Spiritual but not Religious. The phenomenon possibly started to emerge as a result of a new Romantic movement that began in the 1960s, whereas the relationship between the two has been remotely linked to
William James' definition of religious experience, which he defines as the "feelings, acts and experiences of individual men in their solitude, so far as they apprehend themselves to stand in relation to whatever they may consider the divine". Romantic movements tend to lean away from traditional religion and resemble spiritual movements in their endorsement of mystical, unorthodox, and exotic ways. Owen Thomas also states that the ambiguity and lack of structure present in Romantic movements are also present within spiritual movements. According to a study conducted by Pew Research Center in 2012, the number of Americans who do not identify with any religion has increased from 15% in 2007 to 20% in 2012, and this number continues to grow. 18% of the US public and a third of adults under the age of 30 are reportedly unaffiliated with any religion but identify as being spiritual in some way. Of these religiously unaffiliated Americans, 37% classify themselves as spiritual but not religious, while 68% say they do believe in God, and 58% feel a deep connection to the Earth. In 2017, Pew estimated that 27% of the population is spiritual but not religious, but they did not ask respondents directly on this designation. A 2023 study found that that figure was 22% when asking this directly. Increased popular and scholarly attention to "spirituality" by scholars like
Pargament has been related to sociocultural trends towards deinstitutionalization, individualization, and
globalization. Generational replacement has been understood as a significant factor of the growth of religiously unaffiliated individuals. Significant differences were found between the percentage of those considered younger
Millennials (born 19901994) as compared with
Generation Xers (born 19651980), with 34% and 21% reporting to be religiously unaffiliated, respectively. Yet, according to Siobhan Chandler, to appreciate the "god within" is not a twentieth century notion with its roots in 1960s counter culture or 1980s New Age, but spirituality is a concept that has pervaded all of history. == Characteristics==