TY - JOUR
AU - Arps, G. F.
AB - Studied the discriminative efficiency in the perception of real differences, and analyzed various factors involved in the judgments. The apparatus consisted of a light-tight box, modified form of memory apparatus, tachistoscope, and a contact seconds pendulum which controlled the magnet of the tachistoscope. 12 variables were taken up and an interval of 2 secs separated successive presentations of the standard and variable stimuli. Three Os participated in the study. Results indicate that: (1) eye-movement appeared to play no direct role in a judgment, conscious increment of eye-movement acted as a distraction (2) the judgment of a variable as "longer' or "shorter' rested upon the absolute value of the variable, and was immediately perceived as an expansion or shrinkage of the variable; and (3) the standard, at times, varied subjectively, and the same retinal impressions permitted of ambiguous interpretation, leading to illusions.
TI - Visual discrimination of rectangular areas illuminated by varying degrees of achromatic light
JF - Journal of Experimental Psychology: General
DO - 10.1037/h0075056
DA - 1917-02-01
UR - https://www.deepdyve.com/lp/american-psychological-association/visual-discrimination-of-rectangular-areas-illuminated-by-varying-wtqPwayGDX
SP - 41
EP - 62
VL - 2
IS - 1
DP - DeepDyve
ER -