Casey Anthony's Parents Took Lie Detector Test to 'Clear Her Name,' Expert Says

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The results of the lie detector tests that Casey Anthony's parents underwent were revealed in a new TV special that aired on Thursday.

George Anthony, 72, and Cindy Anthony, 65, passed lie detector tests as part of A&E's new TV special, “Casey Anthony's Parents: The Lie Detector Test,” in which they were asked several questions related to the murder of their granddaughter Caylee Anthony and her father The molestation allegations made by her daughter Casey Anthony against her father.

37-year-old Casey Anthony, dubbed “America's most hated mother,” was accused of killing her two-year-old daughter Caylee in 2008, but claims her father was the real perpetrator.

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In the new TV special, George and Cindy take the lie detector test to prove their innocence in their granddaughter's murder and Casey's sexual assault allegations.

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George and Cindy Anthony sit on a red couch and are interviewed. (©️2023, A&E Television Networks, LLC Photo: Mary Beth Koeth)

But as successful as the tests were, they also triggered strong emotions in both parents.

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“In my opinion, participating in the investigation was to clear their name, not only as a suspect despite the investigation being closed, but also to confirm the stories they have told over the years,” said Lisa Ribacoff, one New York-based private investigator and lie detector expert, told Fox News Digital. “The allegations were made by Casey and they wanted to use the lie detector as an investigative tool to give credibility to their stories.”

George Anthony speaks on the phone outside his home in Orlando, Florida, on Tuesday, January 2, 2024. Anthony will appear in a TV special tomorrow about the suspicious death of his granddaughter Caylee Anthony. (Mark Sims for Fox News Digital)

Polygraph exams measure a person's heart rate, blood pressure, breathing, and more. So using cameras in the same room where parents took the test may have affected the results, Ribacoff noted.

“Stumbling happens a lot,” she said. “It is an emotional topic and a difficult topic to discuss. I meet examinees like that all the time. So.”

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Ribacoff also noted that the special “was edited and trailers were released that made it seem like George was guilty, which may be why viewers were so attentive.”

At one point in the special, George accuses his wife of being controlling when she asks the production team to move the couch they are sitting on. Cindy becomes emotional and points out the severity of the lie detector tests. She says George could “end up in jail” if he “messes this all up.”

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In another scene, Cindy has a panic attack while discussing Caylee's murder and the accusations against Casey.

“Since June 16, 2008, Caylee has been my top priority regarding what happened to her and how I can get her back,” Cindy says in the special. “I lost Casey and my granddaughter that day, but Caylee was a priority. Caylee was always my priority. My goal all along was to find out the truth. And to sit here and listen.” [Casey] Keep making up different stories as it suits you…”

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Ahead of the series' release, Fox News Digital caught George Anthony looking relatively calm outside his Florida home.

George Anthony speaks on the phone outside his home in Orlando, Florida, on Tuesday, January 2, 2024. Anthony appeared on a TV special about the suspicious death of his granddaughter Caylee Anthony. (Mark Sims for Fox News Digital)

Another clip from the special shows George “struggling” to answer a question from retired FBI Special Agent George Olivo.

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“When I met them, they soon broke up and I tested George first,” Olivo previously told Fox News Digital. “I didn’t really notice anything.”

George Anthony, Cindy Anthony and Casey Anthony. (©️2023, A&E Television Networks, LLC Photo: Mary Beth/Getty Images Koeth)

Olivo said polygraph tests, when administered correctly, are “85 to 90 percent accurate.”

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Cindy first reported Caylee missing on July 15, 2008, about a month after the toddler was last seen on June 15, 2008. She also told police at the time that Casey's impounded vehicle smelled like a corpse, and experts later testified during her trial that the vehicle actually contained traces of human remains in the trunk.

Caylee Marie Anthony, 2, was found murdered. (Orlando Sentinel/Orlando Sentinel/Tribune News Service)

Casey was arrested in connection with her daughter's disappearance and death that same year and initially told police that the girl had disappeared while she was with a babysitter.

After her daughter's death in June 2008, Casey left home and spent the next month with her boyfriend, apparently without reporting any crime involving her daughter.

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A cross is erected at the Caylee Anthony memorial erected on July 16, 2011 in Orlando, Florida, at the site where the two-year-old's remains were found. (Joe Raedle)

In Peacock's 2022 series titled “Casey Anthony: Where The Truth Lies,” she said that she “sincerely believed that Caylee was still alive.”

Months later, in December 2008, a utility employee found Caylee's skeletal remains in a wooded area about a half-mile from the Anthony family home.

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Jose Baez, who represented Casey Anthony during a month-long trial in 2011, argued that Caylee accidentally drowned in the family's above-ground swimming pool in June 2008, and Cindy has vehemently denied that.

Casey Anthony reacts to being found not guilty of murder at the Orange County Courthouse on July 5, 2011 in Orlando, Florida. On the left is her attorney Jose Baez. (Red Huber Pool)

Prosecutors argued that Casey Anthony suffocated her daughter with chloroform and taped the 2-year-old's mouth shut.

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After deliberating for 11 hours, a Florida jury found Casey Anthony not guilty of first-degree murder, aggravated manslaughter and aggravated child abuse. The case remains unsolved to this day.

Fox News Digital's Stephanie Nolasco, Stephanie Pagones and The Associated Press contributed to this report.