Two presentations of the Mueller-Lyer illusion were investigated: (a) the traditional method and (b) a method involving a slide presentation. The traditional method produced a measure of the illusion that diminished as the angle of the arrowhead increased. The slide presentation gave a similar pattern, although for every angle of arrowhead presented the amount of illusion was greater than that found with the traditional method. Ss, sophisticated about the Mueller-Lyer illusion, gave a greater reading of the illusion with slide presentation than naive Ss recorded with the traditional method.
KeatsJ. A.An application of the method of paired comparisons to the study of the Delbouf illusion. Aust. J. Psychol., 1964, 16, 169–174.
3.
MostellerF.Remarks on the method of paired comparisons: III. A test of significance for paired comparisons when equal standard deviations and equal correlations are assumed. Psychometrika, 1951, 16, 207–218.
4.
MountjoyP. T.Effects of exposure time and intertrial interval upon decrement to the Mueller-Lyer illusion. J. exp. Psychol., 1958, 56, 97–102.
5.
OyamaT.A new psychophysical method of transposition or equal appearing relations. Psychol. Bull., 1959, 56, 74–79.
6.
RudelR. G.TeuberH. L.Decrement of visual and haptic Mueller-Lyer illusions on replicated trials: A study of cross modal transfer. Quart. J. exp. Psychol., 1963, 15, 125–131.
7.
SelkinJ.WertheimerM.Disappearance of the Mueller-Lyer illusion under prolonged inspection. Percept. mot. Skills, 1957, 7, 265–266.
