CRT in the dark
CRT in 1000 fC Illumination
CRT in 10,000 fC Illumination
Tests used to develop automatic adjustment for cockpit displays (Silverstein & Merrifield, 1985)
Pilots adjust luminance up from necessary level. Not change performance but comfort.
So, is difference between Forced-Choice and Method of Constant Stimuli thresholds awareness or comfort?