戴尼提（Dianetics）是一套精神、心灵和身体之间关系的理论，由知名作家罗恩·贺伯特所研究发展出，山达基理论基石。希腊语 dia 的含义是穿越，nous 的含义是心灵。

在戴尼提的心灵模型中，心灵有三个部分：有意识的「分析性心灵」，潜意识的「反应式心灵」，和心灵的躯体。 戴尼提的目标是消除所谓「反应式心灵」，结果是人们越来越道德，意识更清楚，更幸福和理智，达成该目标的戴尼提进程称为「听析」。 在听析过程中，山达基听析员提出一系列问题，企图使听析者摆脱过去的痛苦经验，而该经验是反应式心灵的成因。

Dianetics is a set of ideas and practices regarding the metaphysical relationship between the mind and body created by L. Ron Hubbard; Dianetics is practiced by followers of Scientology and separate independent Dianeticist groups. Hubbard coined Dianetics from the Greek stems dia, meaning "through," and nous, meaning "mind." Dianetics has achieved no acceptance as a scientific theory and is widely considered to be a pseudoscience.