
1865 – 1957
George Malcolm Stratton was an American psychologist who pioneered experimental research on visual perception, most notably his inverting-lens experiments in the 1890s which demonstrated the remarkable adaptability of the perceptual system and shaped debates about the relationship between vision and proprioception.
Conducted the first systematic inverting-lens experiments (1896-1897), wearing lenses that flipped the visual field upside down
Demonstrated that perceptual adaptation to inverted vision is primarily proprioceptive rather than purely visual
Established foundational evidence for the plasticity of spatial perception
Published influential works on emotion, attention, and the psychology of conflict
Served as professor of psychology at the University of California, Berkeley for over four decades
If the adaptation were visual, a visual negative aftereffect would be expected upon lens removal
premiseStratton's world came to look 'right side up' after adaptation because things were felt where they were visually perceived to be
premiseThe absence of a visual negative aftereffect when the inverting lenses were removed indicates no visual recalibration occurred
claimAdaptation to Stratton's inverting lenses is primarily proprioceptive and kinaesthetic rather than visual
If the adaptation were visual, a visual negative aftereffect would be expected upon lens removal
premiseStratton's world came to look 'right side up' after adaptation because things were felt where they were visually perceived to be
premiseThe absence of a visual negative aftereffect when the inverting lenses were removed indicates no visual recalibration occurred
claimAdaptation to Stratton's inverting lenses is primarily proprioceptive and kinaesthetic rather than visual