With Clark Moustakas, he organized a series of meetings held in Detroit that led to the founding of the American Association for Humanistic Psychology, thus launching psychology's "Third Force." The author of books such as The Psychology of Science: 
With Clark Moustakas, he organized a series of meetings held in Detroit that led to the founding of the American Association for Humanistic Psychology, thus launching psychology's "Third Force." The author of books such as The Psychology of Science: A Reconnaissance, and The Farther Reaches of Human Nature, he spent the end of his life developing a spiritual psychology called Transpersonal Psychology. For 10 points, identify this man, who, in Towards a Psychology of Being and Motivation and Personality expounded on his hierarchy of needs.
With Clark Moustakas, he organized a series of meetings held in Detroit that led to the founding of the American Association for Humanistic Psychology, thus launching psychology's "Third Force."
Abraham {Maslow}