A number of practitioners and supporters of alternative medicine oppose Barrett and Quackwatch for its criticism of alternative medicine. Donna Ladd, a journalist with "The Village Voice", says Barrett relies mostly on negative research to criticize alternative medicine, rejecting most positive case studies as unreliable due to methodological flaws. According to Ladd, Barrett insists that most alternative therapies "simply should be disregarded without further research. 'A lot of things don't need to be tested they simply don't make any sense', he says, pointing to homeopathy, chiropractic, and acupuncture as examples of alternative treatments with no plausible mechanism of action."