The Texas Court of Criminal Appeals has issued a significant ruling by halting the execution of Robert Leslie Roberson III, who was on track to become the first individual in the United States executed on the basis of a shaken baby syndrome diagnosis. Roberson was originally convicted for the 2002 death of his two-year-old daughter, Nikki, and was set for execution on October 16. However, the court granted a stay, urging a trial court to review whether evolving scientific insights justify a reassessment of the conviction under Texas law, which allows challenges to convictions involving debunked scientific theories.
In Roberson’s 2003 conviction, medical professionals attributed Nikki’s death to shaken baby syndrome, observing brain swelling, bleeding, and retinal hemorrhaging as key symptoms. However, more recent medical evaluations revealed that Nikki had severe pneumonia and had fallen from her bed, both of which could account for the symptoms initially associated with shaken baby syndrome. The recent court decision highlighted a recent legal precedent, Ex parte Roark, where a new trial was ordered for another prisoner convicted under similar circumstances in 1997, noting significant advancements in scientific understanding.
Roberson’s defense argues that his autism spectrum disorder, which was diagnosed post-conviction, may have led hospital staff and investigators to misread his flat affect as an indication of guilt. This marks the second time Roberson’s execution has been stayed; an earlier interruption was made last year when Texas legislators intervened with a subpoena. Additionally, in 2016, the appeals court paused his execution under the same ‘junk science’ statute, although relief was ultimately denied by a trial court and upheld earlier in 2023.
This development intensifies the debate around the use of forensic science in the criminal justice system, especially regarding shaken baby syndrome. Critics have long argued that the syndrome’s diagnostic criteria can often conflate symptoms of natural diseases or accidental injuries with criminal conduct. The stay in Roberson’s case will remain in force as the trial court undertakes a comprehensive review, potentially setting a precedent for similar future cases.