Becker C A
J Exp Psychol Hum Percept Perform. 1976 Nov;2(4):556-66. doi: 10.1037//0096-1523.2.4.556.
A dual-task paradigm was used to assess attentional processing demands during visual word recognition. By manipulating the difficulty of each task, it is argued that the procedure estimates the attention demands of the memory-access component of word recognition. Specifically, the the complexity of the secondary task was varied from a simple reaction time task to a choice reaction time task, and the difficulty of a lexical decision (word vs. nonword) primary task was varied by manipulating word frequency. A comparison of the effect of secondary task complexity across levels of word frequency showed that the difference between the two secondary tasks was larger for low-frequency words than for high-frequency words. This result, supported by other characteristics of the data, suggests that the memory-access processing in one type of word recognition task does demand attention.
采用双任务范式来评估视觉单词识别过程中的注意力加工需求。通过操纵每项任务的难度，有人认为该程序可以估计单词识别记忆提取成分的注意力需求。具体而言，次要任务的复杂度从简单反应时任务变化到选择反应时任务，而词汇判断（单词与非单词）主要任务的难度则通过操纵单词频率来改变。对不同单词频率水平下次要任务复杂度的影响进行比较，结果表明，低频词的两种次要任务之间的差异比高频词更大。这一结果得到数据其他特征的支持，表明一种单词识别任务中的记忆提取加工确实需要注意力。
