Transpersonal psychology is a form of psychology that studies the transpersonal

Transpersonal

The term transpersonal is often used to refer to psychological categories that transcend the normal features of ordinary ego-functioning. That is, stages of psychological growth, or stages of consciousness, that move beyond the rational andprecede the mystical...

, self-transcendent

Transcendence (philosophy)

In philosophy, the adjective transcendental and the noun transcendence convey the basic ground concept from the word's literal meaning , of climbing or going beyond, albeit with varying connotations in its different historical and cultural stages...

 or spiritual

Spirituality

Spirituality can refer to an ultimate or an alleged immaterial reality; an inner path enabling a person to discover the essence of his/her being; or the “deepest values and meanings by which people live.” Spiritual practices, including meditation, prayer and contemplation, are intended to develop...

 aspects of the human experience.

A short definition from the Journal of Transpersonal Psychology suggests that transpersonal psychology "is concerned with the study of humanity's highest potential, and with the recognition, understanding, and realization of unitive, spiritual, and transcendent states of consciousness" .