In the release from proactive inhibition study by Wickens, which of the following is INCCORECT?
选项：

A:research participants were shown lists of 25 words
B:when a categorically dissimilar list is memorized, memory improves
C:the research participant is tested for recall
D:the research participants' memory becomes worse as more categorically similar lists are memorized
E:the research participants are allowed 20 seconds to memorize as many words as they can