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EEG alpha coherence and slow alpha power were recorded from frontal and occipital derivations during relaxation or the Transcendental Meditation (TM) technique in fifteen subjects. Subjects were tested before and after a two-week baseline period in which half practiced twice daily relaxation and half did not change their schedule. All subjects were then instructed in the TM technique and retested after a two-week period of twice daily practice of the technique. During the first two-week period there were no group differences or group by session interactions, but there was a significant effect of repeated measurement, indicating a decrease in occipital power independent of group. After the two-week TM technique period, subjects showed a significant increase in frontal alpha coherence above a 0.95 threshold. Frontal alpha coherence was found to be a more sensitive discriminator of the TM technique than alpha power, which may clarify previously reported nonsignificant EEG differences between the TM technique and general relaxation.

Serum dehydroepiandrosterone sulfate (DHEA-S) levels were measured in 270 men and 153 women who were experienced practitioners of the Transcendental Meditation (TM) and TM-Sidhi programs, mental techniques practiced twice daily, sitting quietly with the eyes closed. These were compared according to sex and 5-year age grouping to 799 male and 453 female nonmeditators. The mean DHEA-S levels in the TM group were higher in all 11 of the age groups measured in women and in 6 of 7 5-year age groups over 40 in men. There were no systematic differences in younger men. Simple regression using TM-group data revealed that this effect was independent of diet, body mass index, and exercise. The mean TM-group levels measured in all women and in the older men were generally comparable to those of nonmeditator groups 5 to 10 years younger. These findings suggest that some characteristics of TM practitioners are modifying the age-related deterioration in DHEA-S secretion by the adrenal cortex.

This study investigates the effects of the regular practice of the Transcendental Meditation (TM) technique on habitual patterns of visual perception and verbal problem solving. The study's predictions were expressed in the context of Norman's model, which suggests that meditation reduces conceptually driven processes. It was specifically hypothesized that the TM technique involves a reduction of habitual patterns of perceptual and conceptual activation, resulting in (1) more effective application of schemata to new information and (2) less distracting mental activity during performance. This was predicted to result in improved task performance on task conditions in which either (1) habitual patterns of performance hinder or do not aid performance or (2) habitual patterns aid performance. Subjects began the TM technique, relaxed, or added nothing to their daily schedule for 2-week periods. In addition to generalized effects of the interventions, the immediate effects of the TM technique, relaxation, and reading were compared on a letter perception task. The general hypothesis was supported for tasks of tachistoscopic identification of card and letter-sequence stimuli, but not for the verbal problem solving task of anagram solution.This study investigates the effect of the regular practice of the Transcendental Meditation (TM) technique on perception and cognitive manipulation of habitual and unfamiliar stimuli. The TM technique is described as a systematic means of reducing the level of mental activity while maintaining alertness; regular experience of this process, in alternation with ordinary activity, is said to result in both broader comprehension and greater ability to focus attention (Maharishi Mahesh Yogi, 1969). If so, the technique should affect perceptual processes. Previous perceptual research on the TM technique found an increase in the field-independent mode of perception in beginning participants in the TM program, after 3 months, on the embedded figures test, the rod-and-frame test, and the autokinetic perception test (Pelletier, 1974).Within the existing cognitive literature, one framework for understanding how the TM technique could affect the information processing system is a model of meditation suggested by Norman (Lindsay & Norman, 1977). This suggestion is that the reduction of mental

We commend Sedlmeier et al. (2012) for their significant undertaking of meta-analysis of all meditation types on all psychological variables, but additional analyses may modify some of their conclusions. Whereas they suggest from visual inspection of funnel diagrams that there may be publication bias of underreporting low-effect studies on the Transcendental Meditation (TM) technique, quantitative tests do not indicate the presence of bias for any type of meditation. We additionally found that there was no significant difference in effect sizes between studies originating from researchers affiliated with a TM organization and studies from other universities. We found that comparison of different types of meditation on their global index was confounded because their global index aggregated different sets of variables for the different groups. That is, using composite indices that only aggregated variables for which each group had at least 3 studies confirmed the authors' conclusion that effect sizes for different research designs were not different, but found that effect sizes for the TM technique were significantly larger than effect sizes for mindfulness meditation or other meditations. We also located 35 studies on the TM technique that appear to meet the authors' inclusion criteria that were missed by their meta-analysis, and several others on important psychosocial behavioral variables, such as job performance, substance abuse, and prison recidivism that were not reviewed. In addition, we suggest that future meta-analyses on psychological variables include cross-validating physiological studies.

Two weeks of twice-daily practice of the transcendental Meditation (TM) technique was compared with 2 weeks of twice-daily practice of passive relaxation as a means of reduction of anxiety, as measured by the Trait scale of the State-Trait Anxiety Inventory. Thirty-three graduate and undergraduate students were assigned randomly to a relaxation group and a TM group. After a 2-week experimental interval, the relaxation and meditation Ss, as well as between conditions of the relaxation-mediation group; TM was significantly more effective in reducing anxiety level. Thus, the anxiety-reducing effect of the practice of TM cannot be attributed merely to sitting quietly twice daily, although additional research must determine the extent to which S expectations for change contributed to this effect.

Many conceptions of field-effects of consciousness have been proposed. The most well-developed of these is Maharishi Mahesh Yogi’s, which holds that every individual in society, whether stressed or coherent, contributes to collective consciousness. Collective consciousness in turn impacts the life of every individual, guiding the trends of life in the nation. Over 600 studies have documented that the Transcendental Meditation® and advanced TM-Sidhi® program increase coherence in the individual, as indicated by improved brain integration, health, cognitive abilities, and behavior. Fifty additional studies indicate that these more coherent individuals radiate an influence of coherence throughout society, as reflected in reductions of conflicts and improvements in quality of life. In the present study, interrupted time series analysis was used to evaluate the effectiveness of this population-level health intervention that was implemented at a clearly defined point in time. It found that during the Demonstration period of 2007-2011, compared to the Baseline period of 2000 to 2006, when a group practicing the Transcendental Meditation and TM-Sidhi techniques reached or exceeded a predicted required threshold of √1% of the U.S. population (1725) there were significant and meaningful trend reductions in indicators of national stress: homicides, rape, aggravated assault, robbery, infant mortality, drug-related deaths, motor vehicle fatalities, fatalities due to injuries in youths ages 10-19, and in a composite index of all eight variables (p’s < .0001). Moreover, from 2007 to 2016, when the size of the group decreased to below the required threshold, all stress indicators increased again. Potential alternative explanations in terms of changes in economic conditions, political leadership, population demographics, and policing strategies could not explain the results. The results support a new highly practical field-theoretic understanding of social dynamics.