We evaluated the amplitude and intertrial coherence as a function of AR (4 levels) by repeated-measures analysis of variance (ANOVAs) for each time point of the epoch in the interval of −100 to +400 ms using the Huynh Feldt correction to compensate for violation of sphericity.
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Greenhouse-Geisser corrections were applied to compensate for sphericity violations.
The Greehouse-Geisser correction was applied to compensate for possible violations of the sphericity assumption associated with factors which had more than two levels.
The main effects for both word type, F(1.04, 9.38) = 156.64, p < .001 (with a Greenhouse Geisser adjustment to compensate for the violation of sphericity assumption) and word length, F 3, 27) = 19.86, p < .001 were significant.
There was also a significant word length by word type interaction, F(2.07, 18.62) = 7.87, p = .003 (with a Greenhouse Geisser adjustment to compensate for the violation of sphericity assumption).
There was a significant word length and word type interaction F(1.82, 16.39) = 29.85, p < .001 (with a Greenhouse Geisser adjustment to compensate for the violation of the sphericity assumption).
The interaction between word type and word length was also significant, F(2.05, 18.41) = 11.38, p = .001 (with a Greenhouse Geisser adjustment to compensate for the violation of the sphericity assumption).
Analysis of the mean error scores at the orthographic units revealed main effects for both word length, F(1.20, 10.79) = 139.79, p < .001 (with a Greenhouse Geisser adjustment to compensate for the violation of the sphericity assumption) and word type, F 2, 18) = 67.49, p < .001.001
