polygraphs lee clarence (1 Ergebnisse)

8vo. xv, [1], 249, [3] pp. With numerous text illustrations & diagrams. Burgundy pebbled cloth, gilt lettering on spine (minor shelfwear), w/ d.j. (couple minor closed tears, edgewear, dustsoiling), VG/VG copy w/ former ownership markings on ffep. First edition of this scarce title in criminology offering new approaches to interpret and apply polygraph and lie detector tests by one of the pioneering innovators in the field. He has included sections on the Darrow Photopolygraph, Reactograph, Larson Polygraph, Keeler Polygraph, Lee Psychograph, and more with tests for use in banking, retail stores, pre-employment tests, and more. In the 1920s, Captain Lee, Chief of Detectives of the Berkeley, CA police department invented a sprocket drive for the movement of the chart paper, and an improved means of converting bloadd pressure signals into reliable tracings.