Of penile plethysmographs and other stuff

A month ago, I did a post on the decision of a Summit County judge admitting the results of a polygraph in a criminal case.  Thanks to the gang over at the Appellate Law & Practice blog, we now know that the Virginia Supreme Court considered a somewhat-related issue recently, and concluded that the result of a penile plethysmograph was not admissible.  For the uninitiated, the penile plethysmograph is perhaps best described in this 9th Circuit opinion from a few years back:

Penile plethysmograph testing is a procedure that "involves placing a pressure-sensitive device around a man's penis, presenting him with an array of sexually stimulating images, and determining his level of sexual attraction by measuring minute changes in his erectile responses."

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