Department of Psychology, Victoria, British Columbia V8W 3P5, Canada.
J Exp Psychol Learn Mem Cogn. 2013 May;39(3):898-914. doi: 10.1037/a0029180. Epub 2012 Jul 9.
Additive and interactive effects of word frequency, stimulus quality, and semantic priming have been used to test theoretical claims about the cognitive architecture of word-reading processes. Additive effects among these factors have been taken as evidence for discrete-stage models of word reading. We present evidence from linear mixed-model analyses applied to 2 lexical decision experiments indicating that apparent additive effects can be the product of aggregating over- and underadditive interaction effects that are modulated by recent trial history, particularly the lexical status and stimulus quality of the previous trial's target. Even a simple practice effect expressed as improved response speed across trials was powerfully modulated by the nature of the previous target item. These results suggest that additivity and interaction between factors may reflect trial-to-trial variation in stimulus representations and decision processes rather than fundamental differences in processing architecture.
词频、刺激质量和语义启动的附加和交互效应被用来检验关于单词阅读过程认知结构的理论假设。这些因素之间的附加效应被认为是单词阅读离散阶段模型的证据。我们从应用于 2 个词汇判断实验的线性混合模型分析中提出证据，表明明显的附加效应可能是聚合过度和不足的交互效应的产物，这些效应受最近试验历史的调节，特别是前一个试验目标的词汇状态和刺激质量。即使是一个简单的练习效应，表现为随着试验的进行反应速度的提高，也受到前一个目标项目的性质的强烈调节。这些结果表明，因素之间的相加性和交互作用可能反映了刺激表示和决策过程的逐次试验变化，而不是处理架构的根本差异。
