Inside the Investigation of Higdon's Memories

Introduction

The investigation of Carl Higdon’s 1974 UFO encounter became closely associated with psychologist R. Leo Sprinkle because Sprinkle’s interviews and hypnosis sessions shaped much of the later case record. His work did not prove what happened in the Medicine Bow National Forest, but it transformed Higdon’s account from a brief report of confusion and missing time into a detailed narrative containing additional memories of the alleged craft, its occupants, and the experience after the initial encounter.[Archive.ph]archive.phHunted By Aliens: The Higdon Ordeal | Mysterious UniverseJanuary 23, 2012…Published: January 23, 2012

The importance of Sprinkle’s involvement lies in a central dispute that has followed UFO abduction research for decades: whether hypnotic regression can uncover forgotten experiences or whether it can unintentionally create confident but inaccurate memories. Supporters of Sprinkle’s approach viewed hypnosis as a way to help witnesses recover details lost during a frightening event. Critics argued that memory is reconstructive and that hypnosis, especially when combined with expectations about UFO encounters, can increase the risk of suggestion and false recollection.[Annual Reviews]annualreviews.orgAnnual Reviews Recovered Memories | Annual ReviewsAnnual ReviewsRecovered Memories | Annual ReviewsApril 27, 2006…Published: April 27, 2006

Sprinkle’s interviews with Higdon

After Higdon was found distressed and unable to account clearly for the missing period following his reported encounter, investigators connected him with Leo Sprinkle, then a psychologist at the University of Wyoming who had developed an interest in UFO reports and witness psychology. Sprinkle began interviewing Higdon in November 1974, with additional discussions involving people connected to the case, including members of the search effort and individuals who knew Higdon personally.[Archive.ph]archive.phHunted By Aliens: The Higdon Ordeal | Mysterious UniverseJanuary 23, 2012…Published: January 23, 2012

Sprinkle’s approach reflected a broader shift in UFO investigations during the 1970s. Researchers increasingly treated witnesses not simply as people reporting unusual sightings, but as individuals who might hold incomplete memories of emotionally intense experiences. In Higdon’s case, the central investigative problem was the period he could not consciously recall. The purpose of the sessions was therefore not only to document what Higdon already remembered, but to explore whether more information could be accessed through hypnosis.[Archive.ph]archive.phHunted By Aliens: The Higdon Ordeal | Mysterious UniverseJanuary 23, 2012…Published: January 23, 2012

According to later accounts of the investigation, Higdon’s hypnotic sessions produced further descriptions of the encounter, including additional details about the alleged being he called “Ausso,” the interior of the craft, and events during the missing-time period. Sprinkle and other investigators considered these additions significant because they appeared to provide a fuller narrative of an event Higdon had initially described only in fragments.[Archive.ph]archive.phHunted By Aliens: The Higdon Ordeal | Mysterious UniverseJanuary 23, 2012…Published: January 23, 2012

However, the evidential status of these memories remained disputed. The additional details were not independent observations recorded by another witness; they were recovered through a process that depended on Higdon’s memory, the structure of the interviews, and the assumptions surrounding the investigation. This distinction became central to later criticism of the case.[Annual Reviews]annualreviews.orgAnnual Reviews Recovered Memories | Annual ReviewsAnnual ReviewsRecovered Memories | Annual ReviewsApril 27, 2006…Published: April 27, 2006

Hypnosis and recovered details

During the 1970s, hypnotic regression was widely viewed by many investigators as a possible method for recovering hidden memories. In UFO research, it became particularly influential because many alleged abduction reports involved “missing time” — periods when witnesses said they could not remember what had happened. Sprinkle became one of the better-known figures using hypnosis with people who reported UFO experiences, later describing his work with many such witnesses.[regressionjournal.org]regressionjournal.orgThe International Journal of Regression TherapyJuly 17, 2017…Published: July 17, 2017

The appeal of hypnosis was straightforward: if a witness was sincere but unable to remember an important part of an event, a relaxed hypnotic state appeared to offer a way to bypass ordinary forgetting. In Higdon’s case, supporters argued that the method helped reveal information that matched the unusual circumstances of the encounter and allowed investigators to understand why he had been found disoriented.[Archive.ph]archive.phHunted By Aliens: The Higdon Ordeal | Mysterious UniverseJanuary 23, 2012…Published: January 23, 2012

The difficulty is that hypnosis does not function as a recording device for the brain. Modern memory research has shown that remembering is an active reconstruction process, and that techniques involving suggestion or guided recall can contribute to distorted memories. Reviews of recovered-memory research have highlighted concerns that certain procedures may produce memories that feel genuine to the person recalling them while not necessarily corresponding accurately to past events.[Annual Reviews]annualreviews.orgAnnual Reviews Recovered Memories | Annual ReviewsAnnual ReviewsRecovered Memories | Annual ReviewsApril 27, 2006…Published: April 27, 2006

This created a major challenge for interpreting Higdon’s later testimony. A hypnotically retrieved detail could be meaningful to the witness and still require separate verification before being treated as evidence of an external event. The sessions therefore strengthened the historical record of what Higdon came to believe had happened, but they did not independently establish that the recalled events occurred exactly as described.[Frontiers]frontiersin.orgOpen source on frontiersin.org.

Sincerity versus explanation

One of the most persistent features of the Higdon investigation is the distinction between honesty and accuracy. Sprinkle and other investigators generally treated Higdon as a credible person who appeared genuinely affected by his experience. Later summaries of the investigation note that people who knew Higdon described him as honest and that psychological testing did not reveal obvious signs of mental illness.[Think Anomalous]thinkanomalous.comcarl higdonThink AnomalousCarl Higdon Abduction, 1974 - Think Anomalous…

For supporters of the case, this mattered because they did not see Higdon’s account as a simple fabrication. They argued that his confusion, the reported physical anomalies, and his willingness to undergo investigation were more consistent with a person trying to understand an unusual event than someone inventing a story. Sprinkle’s own published discussions of UFO experiencers reflected his broader view that such witnesses should be approached seriously and psychologically rather than dismissed automatically.[regressionjournal.org]regressionjournal.orgThe International Journal of Regression TherapyJuly 17, 2017…Published: July 17, 2017

Sceptical interpretations focus on a different question: whether sincerity demonstrates that the reported explanation is correct. A witness can honestly describe an experience while still being mistaken about its cause. From this perspective, Higdon’s memories after hypnosis may represent a genuine account of his beliefs and perceptions, but the method used to obtain those memories limits how strongly they can be used as proof of an extraterrestrial explanation.[Annual Reviews]annualreviews.orgAnnual Reviews Recovered Memories | Annual ReviewsAnnual ReviewsRecovered Memories | Annual ReviewsApril 27, 2006…Published: April 27, 2006

The Higdon case therefore became an example of a wider methodological debate in UFO research. Sprinkle’s investigation preserved valuable information about a witness’s experience and influenced later abduction studies, but it also exposed the risks of relying on recovered memories when the main evidence comes from the witness’s own reconstructed account. The lasting question is not simply whether Higdon was believable, but how investigators should evaluate sincere testimony when the process of remembering may itself shape the final story.[Annual Reviews]annualreviews.orgAnnual Reviews Recovered Memories | Annual ReviewsAnnual ReviewsRecovered Memories | Annual ReviewsApril 27, 2006…Published: April 27, 2006

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Endnotes

1. Source: archive.ph
Title: Hunted By Aliens: The Higdon Ordeal | Mysterious Universe
Link:https://archive.ph/Hlavf

Published: January 23, 2012

2. Source: regressionjournal.org
Link:https://regressionjournal.org/jrt_article/psychotherapeutic-services-for-persons-who-claim-ufo-experiences-leo-sprinkle-is-29/

Published: July 17, 2017

3. Source: regressionjournal.org
Title: Leo Sprinkle
Link:https://regressionjournal.org/jrt_author/leo-sprinkle/

4. Source: thinkanomalous.com
Title: carl higdon
Link:https://www.thinkanomalous.com/carl-higdon.html

5. Source: annualreviews.org
Title: Annual Reviews Recovered Memories | Annual Reviews
Link:https://www.annualreviews.org/content/journals/10.1146/annurev.clinpsy.2.022305.095315

Published: April 27, 2006

6. Source: frontiersin.org
Link:https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1433762/full

7. Source: hatch.kookscience.com
Title: Leo Sprinkle
Link:https://hatch.kookscience.com/wiki/Leo_Sprinkle

8. Source: ufoexperiences.blogspot.com
Title: carl higdon
Link:https://ufoexperiences.blogspot.com/2006/07/carl-higdon.html

9. Source: files.ncas.org
Link:https://files.ncas.org/ufosymposium/sprinkle.html

Additional References

10. Source: spreaker.com
Link:https://www.spreaker.com/episode/the-clearview-rocky-mountain-ranch-case-the-1978-hypnosis-session-of-jim-pages-1-5-of-14–70580393

Published: March 10, 2026

11. Source: youtube.com
Link:https://www.youtube.com/watch?v=zXvwYBEZH2I

Published: October 25, 1974

12. Source: youtube.com
Title: Official MUFON Podcast Episode 11
Link:https://www.youtube.com/watch?v=Qk-bnMOcUx8

Published: October 25, 1974

13. Source: youtube.com
Title: Abductee’s Prophecies
Link:https://www.youtube.com/watch?v=1K3GbJ0YuTo

14. Source: podcasts.apple.com
Link:https://podcasts.apple.com/us/podcast/hypnosis-unlocked-allien-nightmares/id1542823398?i=1000776182487

Published: July 9, 2026

15. Source: youtube.com
Title: Dr. Leo Sprinkle: Investigating the Travis Walton UFO Case
Link:https://www.youtube.com/watch?v=Irwa-jJi7sk

16. Source: youtube.com
Title: WHAT DR. SPRINKLE DISCOVERED UNDER HYPNOSIS
Link:https://www.youtube.com/watch?v=ZxBcsHo5JDs

17. Source: thequanfinityproject.org
Link:https://thequanfinityproject.org/vanishing_protocol_chapter_three_final

18. Source: mydarkpath.com
Link:https://www.mydarkpath.com/81-dr-leo-sprinkle

19. Source: exopaedia.org
Link:https://www.exopaedia.org/Leo%2BSprinkle