Perceived Duration Increases with Contrast, but Only a Little.

1 A two-factor repeated-measures ANOVA on onset-offset match shows a marginally significant effect of contrast [ F (1, 3) = 9.83, p = 0.052], but no significant effect of match type [onset vs. offset, F (1, 3) = 0.02, p = 0.89] and no significant interaction [ F (1, 3) = 3.92, p = 0.14].

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Although they found a tendency for the higher contrast stimulus to be perceived as longer, the effect failed to reach statistical significance.

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