The defendant was convicted of second-degree murder and is now appealing the judgment. The defense argues that an expert witness should have been allowed to testify about the results of a systolic blood pressure deception test, which they claim can distinguish between truthful and false statements based on blood pressure changes. The defense offered to conduct the test in front of the jury, but the court denied this. The court's decision hinges on whether the test is widely accepted and established in the fields of physiology and psychology.
Frye v. United States (1923)
United States Court of Appeals for the District of Columbia
293 F. 1013
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