R. Leo Sprinkle

Academic Foundation

Ronald Leo Sprinkle was born on August 31, 1930, in Rocky Ford, Colorado. He earned a B.A. in Psychology, Education, Sociology, and History from the University of Colorado (1952), followed by an M.P.S. in Counseling (1956) from the same institution. He completed his Ph.D. in Counseling and Guidance from the University of Missouri in 1961, and became a licensed psychologist in Wyoming in 1966. From 1964 until his retirement in 1989, Sprinkle served as a Counseling Psychologist and Associate Professor of Psychology at the University of Wyoming, eventually becoming Director of the Counseling and Testing Center. This academic position provided him with institutional legitimacy and clinical resources essential for his UFO research.

Pioneering Regression Therapy Work

Beginning in 1967, Sprinkle initiated hypnotic regression sessions for individuals claiming UFO abduction experiences. Over the next five decades, he conducted over 500 hypnotic regressions with UFO abductees and contactees—one of the largest bodies of clinical work undertaken by any single researcher in the field. Among his notable subjects were Herb Schirmer, who reported a close encounter and possible abduction in Nebraska; Sandy Larson and Pat McGuire, documented abductees; and Myrna Hansen, whose 1976 encounter included alleged CE-IV (close encounter of the fourth kind, involving contact). Sprinkle's clinical approach provided emotional support and structured documentation of abductee narratives, distinguishing his work from purely investigative or journalistic approaches. He developed supportive therapeutic methods to help experiencers process their encounters, and his work in regression therapy contributed to its legitimacy as a clinical tool within the broader UFO research community.

Rocky Mountain Conference and Organizational Leadership

In 1980, Sprinkle founded the Rocky Mountain Conference on UFO Investigation, an annual summer gathering hosted at the University of Wyoming that became a crucial safe space for hundreds of UFO contactees, abductees, and experiencers seeking to understand and validate their experiences. The conference ran for approximately two decades, evolving over time as abduction reports surged in the late 1980s. Sprinkle joined both the Aerial Phenomena Research Organization (APRO) and the National Investigations Committee on Aerial Phenomena (NICAP) in 1962, serving as an advisor to APRO and presenting on psychic impressions of UFO phenomena at APRO symposia. He developed the PACTS model, a framework for classifying different types of experiencer encounters: Paranormal, Abduction/Contact, Transformation, and Service. This systematic approach filled a gap in the field, providing structure and language for organizing disparate encounter types that had previously resisted categorization.

Legacy and Impact

Sprinkle's work bridged academic psychology and UFO research, lending clinical credibility to the study of abduction experiences at a time when the topic was dismissed or pathologized in mainstream psychology. By treating abductees with respect and documenting their accounts through formal therapeutic methods, he helped shift the discourse from dismissal toward empirical inquiry. His Rocky Mountain Conference became a model for supportive, non-judgmental forums where experiencers could share encounters without ridicule. Sprinkle passed away in November 2021, leaving behind one of the most comprehensive archives of UFO abductee testimonies gathered through clinical practice. His papers, spanning 1961–2020, are preserved in the University of Wyoming's special collections, making his work available for future researchers.