| Abstract: | The present study examines the role of Luria's dimensions of simultaneous and successive synthesis in fixation and extinction of the Uznadze haptic illusion. The subjects were 53 grade 10 high school students. Extinction of the illusion correlated significantly with three measures which, according to Luria's criteria, are indicative of simultaneous synthesis. Correlations between extinction and measures of successive synthesis failed to reach significance. Fixation of the illusion was unrelated to measures of either simultaneous or successive synthesis. An exploratory factor analysis of the data suggested the hypothesis that extinction of the illusion is greatly facilitated when the successive presentations of the spheres are integrated into a simultaneous or contemporaneous pattern. |
