Simpson's lawyers renewed their attack on DNA evidence, asking for an admissibility hearing on all test results submitted since they abandoned their pretrial challenge of such evidence.

CNN: O.J. Simpson trial: Houseguest Kato Kaelin testifies

The more traditional method of measuring hearing loss, the distraction test, requires a baby to sit upright on the mother's lap, responding to sound without seeing the source, and therefore cannot be done before 8 months.

BBC: Babies' hearing problems undiagnosed