DUPLEX THEORY By N., Sam M.S. - 60 Theory that our vision relies on 2 receptors. Also called duplicity theory. DUPLEX THEORY: "Duplex theory looks at the retinal rods and cones and how they receive light." Related Psychology Terms VISIBILITY CURVE ROD-CONE BREAK Identifying Relevant Theories and Models PHOTOPIC VISION VISUAL DEFECTS STIMULUS (literally “goad”) PHOTOPIGMENT COLOR BLINDNESS Piaget’s Theory of Cognitive Development ABSOLUTE THRESHOLD Cite this page: N., Sam M.S., "DUPLEX THEORY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/duplex-theory/ (accessed June 25, 2022).