Files

Download

Download Full Text (543 KB)

Description

David L. Cowles, superintendent of the bureau of scientific identification for the Cleveland Police Department, discusses how a polygraph works and why the taking of the test is always voluntary.

Publication Date

7-12-1954

Keywords

polygraph, Sam Sheppard, Thomas J. Parrino, David L. Cowles

Item Number

17b

Box Number

540712_8

54/07/12 Lie Test Aids Police - Out of Court

Share

COinS