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The Rasch Scaling of the Mystical Experience Scale is an attempt to bring interval level measurement to the study of mystical experience allowing, theoretically, for the measurement of Connection Intensity.
According to Lang and Thalbourne, "the intensity of mystical experiences forms a progression that starts with quite general experiences of happiness, followed by enlightenment by a higher power, and ultimately leading to union with the Absolute." 
"...the intensity can range from a few moments of rapture to several hours of shattering psychological experience." 
Types of experience, from least to most intensive, Insights/intuitive glimmers, Peak Experience, Mystical Glimpse, Mystical Visions, Revelations, transcendent experiences, permanent unions.
Einstein nodded: he was a good listener. After a pause he said, "The cosmic man must be restored, the whole man who is made in the image and likeness of the arch-force, which you may call God. This man thinks with his heart and not with party dogma. As I've explained before, there is an order in the universe – a cosmic order – and humans have the possibility of understanding these laws." Einstein leaned back in his chair; so did I,putting my writing pad on my knees. He added, "I have no doubt that the allies will win the war." I smiled, "Oh, you are my prophet again." Prophet or not," he scratched his head, "what I say is more often felt through intuition than thought through intellect. (Hermanns, 1930).
- Lange, Rense, and Michael A. Thalbourne. "The Rasch Scaling of Mystical Experiences: Construct Validity and Correlates of the Mystical Experience Scale (Mes)." The International Journal for the Psychology of Religion 17 2 (2007): 121-40.
- Lange, Rense, and Michael A. Thalbourne. "The Rasch Scaling of Mystical Experiences: Construct Validity and Correlates of the Mystical Experience Scale (Mes)." The International Journal for the Psychology of Religion 17 2 (2007): 130.
- Allman, Lorraine S., Olivia de la Rocha, David N. Elkins, and Robert S. Weathers. “Psychotherapists’ Attitudes toward Clients Reporting Mystical Experiences.” Psychotherapy: Theory, Research, Practice, Training 29, no. 4 (Win 1992): 565.