states Zehner. Scholars are not in agreement on the name of the Dhammakaya tradition. Some scholars use Dhammakaya Tradition, while others use the term Dhammakaya temples, or Dhammakaya Movement. Newell states the term Dhammakaya Movement has been confusingly used by various scholars. Some scholars use the term Dhammakaya movement interchangeably with Wat Phra Dhammakaya – the tradition's largest temple. She considers this problematic because this terminology has been used "without distinguishing between the various temples practising dhammakaya meditation and Wat Dhammakaya itself... There are considerable differences in style, practice and structure of all the temples". She prefers to use the term Dhammakaya temples. She is quoted on this by Religious Studies scholar Justin McDaniel, but he nevertheless uses Dhammakaya Movement without distinguishing between the various temples and Wat Phra Dhammakaya. Buddhist Studies scholars Kate Crosby and Phibul Choompolpaisal, on the other hand, speak of a "network" of Dhammakaya temples. History Yogavacara origins Scholars have theorized that the Dhammakaya Tradition has its roots in the Yogavacara tradition (also known as Tantric Theravada; not to be confused with the Yogacara School in Mahayana Buddhism), which thrived in pre-modern, pre-colonial times. This ancestry would be related to , the former residence of (early 19th century), "the heir to the teaching of Ayutthaya meditation masters," and the temple where Luang Pu Sodh used to practice before he went on to develop Dhammakaya meditation. According to theologian Rory Mackenzie, Yogavacara ideas are the most likely influence on Dhammakaya meditation system, though this is not definitely proven. According to Buddhist Studies scholar Catherine Newell, "there is no doubt that Dhammakaya meditation is based upon the broader yogavacara tradition." She presents evidence of the borrowing of Luang Pu Sodh's Dhammakaya system from Somdet Suk's system of meditation. She and Asian studies scholar Phibul Choompolpaisal believe a Yogavacara origin to be most likely. If this would be the case, the tradition's meditation method would be an exoteric (openly taught) version of what initially was an esoteric tradition. An alternative theory suggests an origin in Tibetan or other forms of Mahayana Buddhism. According to Mackenzie, it is possible but unlikely that someone who knew the Tibetan meditation methods met and shared that knowledge with Luang Pu Sodh in the early 1910s. There are similarities between the two systems, states Mackenzie, as well as with the concepts such as chakra (tantric psycho-physical centers), "crystal sphere" and Vajra. Though these commonalities