采用词汇判断任务，通过两项实验同时操纵首、尾词素的位置概率信息，考察词汇语境多样性对首、尾词素位置概率信息加工的调节方式。结果发现，高语境多样性词汇识别中，仅当首词素位置概率较低时，读者才会利用尾词素位置概率信息进行词汇识别；在低语境多样性词汇识别中，读者同时利用首、尾词素位置概率信息进行词汇识别。这表明，词汇语境多样性自上而下调节首、尾词素位置概率信息加工，支持中文双字词加工的混合通达表征模型。

Two parallel experiments were designed to examine how contextual diversity modulated the processing of initial and final character’s positional probability in Chinese word identification. In Experiment 1, we manipulated the initial and final characters’ positional frequencies for two-character words with high contextual diversity. In Experiment 2, an analogous manipulation was made for low contextual diversity words. Sixty participants were instructed to take part in the lexical decision task in the two experiments. The results showed that, for the identification of high contextual diversity words, Chinese readers were sensitive to word’s final character positional frequency only when the word’s initial character was not frequently occurring at word beginning. In contrast, both the initial and final character’s positional frequency were processed for the identification of low contextual diversity words. We argue that these findings support the augmented addressed morphology model theory of Chinese word recognition.