University students that were taught Maharishi’s Transcendental Meditation technique showed improved clustering in short-term memory after a mere 40 days of practicing the technique, which indicated an increased organisation of the thought process, as compared to randomly assigned control groups, that were instructed to sit with their eyes closed twice a day. (p<.001)Ref.Scientific Research on the Transcendental Meditation Programme: Collected Papers, Volume 1: 385–392, 1977

Cadets at a military academy that learned Maharishi’s Transcendental Meditation technique showed an increased ability to report specific details of scenes shown to them earlier. (p<.00001)Ref.‘Project for introduction of a programme for prevention of stress—Transcendental Meditation’. Centre for Personnel Studies, Department of Teaching and Research, Ministry of the Army, Brazil

Among 147 long-term TM and TM Sidhi practitioners (meditating 9 years on average), a significant correlation was found between the length of TM practice and higher scores on: visual memory, non-verbal intelligence, creativity, field independence, response speed, sensory speed, and motor speed. The longer that TM and the TM Sidhi techniques were practiced, the higher the score, which indicates that Transcendental Meditation has a positive influence on all these factors.Ref.Scientific Research on Maharishi’s Transcendental Meditation, Collected Papers Vol 3, 257, pp 1954-1966