A doctoral dissertation at Harvard University found that inmates in a maximum security prison who learned the Transcendental Meditation Programme showed significantly decreased return to prison after at least 36 months, in comparison to random samples of participants of four other prison rehabilitation programmes, controlling for time of release from prison.Ref.Journal of Offender Rehabilitation 36: 161–180, 2003

Parolees of the California Department of Corrections who learned the Transcendental Meditation Programme while in prison showed significantly fewer new prison terms in comparison to matched controls, at one year after release and overall from six months to six years after release. In contrast, prison education, vocational training, and counseling programmes had no consistent effect.Ref.Journal of Criminal Justice 15: 211–230, 1987

Maximum security prison inmates who learned the Transcendental Meditation Programme were found to have decreased resentment in comparison to controls.Ref.Criminal Justice and Behavior 5: 3–20, 1978

School students with a current diagnosis of attention deficit hyperactivity disorder (ADHD) who learned the Transcendental Meditation Technique displayed after three months reduced stress, anxiety, and ADHD symptoms, as rated both by teachers and by themselves. The p-value on the chart indicates improvement as determined by a multivariate test for the following subscales: anxious/depresses, withdrawn/depressed, affective problems, anxiety problems, attention problems, ADHD problems, and total problems; the bars on the chart indicate change on the total problems subscale.Ref.Current Issues in Education 10(2), 2008. [Online]