The concepts of self in the Vedic psychology of Maharishi Mahesh Yogi and in the Bhagavad-Gita are fundamentally the same. Both describe two aspects of self, the limited individual self (ego) and its universal basis in a field of transcendental or pure consciousness ("Self"). This transcendental self, as noted by Darbar (1989), can be experienced subjectively but not directly objectively measured. However, this subjective experience has physiological, psychological, and social effects that can be empirically assessed. The large body of scientific research on the Transcendental Meditation and TM-Sidhi program is thus capable of testing the concept of self and the higher states of consciousness described in the Bhagavad-Gita and in Maharishi's Vedic psychology. Moreover, these procedures form a systematic subjective technology, capable of developing the consciousness of the knower, and thus of central importance for the fields of psychology and education.