Paul Rousselle appealed his conviction for aggravated assault on a four-month-old infant, Baby L., arguing that the trial judge's reasoning was illogical or irrational.
The medical evidence indicated Baby L. suffered injuries consistent with shaking.
Rousselle had initially denied involvement but later confessed to police and his partner that he shook the baby out of frustration when she wouldn't stop crying.
At trial, he recanted, claiming he lied to police to protect his own child from child protective services.
The Court of Appeal dismissed the appeal, finding the trial judge's decision to accept Rousselle's confessions while rejecting his claims of gentle force was logical and rational, supported by the medical evidence and the circumstances of the confession.
The court also upheld the admission of evidence regarding Rousselle's prior angry reaction to a video game interruption, finding it relevant to his state of mind and not unduly prejudicial.