Using data from the 2009 National Survey on Drug Use and Health, which included nearly 70,000 respondents aged 12 and older across all 50 U.S. states and the District of Columbia, lifetime salvia use was reported by 1.66% of adolescents (ages 12–17) and 5.08% of adults (ages 18–34). Among adolescents, use correlated with age, gender, income, peer and parent attitudes toward substance use, and other drug use. Among adults, correlates included age, gender, race, religiosity, marital status, criminal involvement, and other substance use.
The authors propose a structuralist account of conscious experience by examining the parts that compose the minimal sense of self. Using a variational method, they argue that the feeling of agency, the feeling of privacy, and the feeling of “me-ness” are separable components that can be dissociated in various combinations, as supported by empirical and clinical cases. Removing or altering any of these components changes the whole experience in a holistic but determinate way, much like altering an instrument in a symphony alters the overall sound.