Department of Psychology, University of California, San Diego.
Departamento de Metodología, Universitat de València.
J Exp Psychol Learn Mem Cogn. 2014 Jan;40(1):275-83. doi: 10.1037/a0034058. Epub 2013 Aug 12.
Recent research has shown contextual diversity (i.e., the number of passages in which a given word appears) to be a reliable predictor of word processing difficulty. It has also been demonstrated that word-frequency has little or no effect on word recognition speed when accounting for contextual diversity in isolated word processing tasks. An eye-movement experiment was conducted wherein the effects of word-frequency and contextual diversity were directly contrasted in a normal sentence reading scenario. Subjects read sentences with embedded target words that varied in word-frequency and contextual diversity. All 1st-pass and later reading times were significantly longer for words with lower contextual diversity compared to words with higher contextual diversity when controlling for word-frequency and other important lexical properties. Furthermore, there was no difference in reading times for higher frequency and lower frequency words when controlling for contextual diversity. The results confirm prior findings regarding contextual diversity and word-frequency effects and demonstrate that contextual diversity is a more accurate predictor of word processing speed than word-frequency within a normal reading task. (PsycINFO Database Record (c) 2013 APA, all rights reserved).
最近的研究表明，语境多样性（即给定单词出现的段落数量）是预测单词处理难度的可靠指标。已经证明，在孤立单词处理任务中考虑语境多样性时，单词频率对单词识别速度的影响很小或没有。进行了一项眼动实验，在正常的句子阅读场景中直接对比了单词频率和语境多样性的影响。受试者阅读嵌入目标单词的句子，这些目标单词的单词频率和语境多样性各不相同。在控制单词频率和其他重要词汇属性的情况下，与语境多样性较高的单词相比，语境多样性较低的单词的首次和后续阅读时间明显更长。此外，在控制语境多样性的情况下，高频词和低频词的阅读时间没有差异。研究结果证实了先前关于语境多样性和单词频率效应的发现，并表明在正常阅读任务中，语境多样性比单词频率更能准确预测单词处理速度。（APA 心理档案数据库记录（c）2013，保留所有权利）。
