The article introduced 4 effects of negative biases in conditional reasoning including difficulty in research on MP and MT, Wason抯 selection task, affirmative bias and negative bias.

• 介绍假言推理中的4种否定词效应,以及相关的理论模型。被试在进行假言推理时,对前提或结论所表示的事件加进了否定词,产生了一系列的心理效应。