Download or read book Sensory Experiments written by Erica Fretwell and published by . This book was released on 2020 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Erica Fretwell examines how psychophysics--a nineteenth-century scientific movement originating in Germany dedicated to the empirical study of sensory experience--became central to the process of creating human difference along the lines of race, gender, and ability in nineteenth-century America.