Toward the end of his life, maslow began to develop psychology that went beyond personal experience (mystical, ecstatic, spiritual aspects) and had much in common with non-western psychologies, philosophies and religions.

The answer is "both transpersonal and fourth-force psychology".

Transpersonal psychology coordinates the otherworldly and extraordinary parts of the human involvement with the structure of present day psychology.In 1968 Maslow was among the general population who declared Transpersonal psychology as a "fourth force" in psychology, keeping in mind the end goal to recognize it from the three different powers of psychology.

The answer is congress