Abstract: The perceptual interference effect is a degraded version of a previously exposed stimuli is less likely to be identified if it is preceded by even more degraded versions.By means of the Chinese eight-character idioms,Experiment 1 examined the effect of the presentation order,Experiment 2 investigated the effect of the degradation type.The results showed:(1) the perceptual interference effect couldn’t be found in degraded idioms while presentation order was the forward ascending condition、the bac...