Nine experiments involving young adults (N = 525) tested the roles of local (sentence) and global (discourse) contexts on lexical processing. Contextual material was presented auditorily, and naming times for the last (visually presented) word were collected. Experiment 1 tested the local contexts alone and found facilitation of naming latencies when local contexts were related to the target word. Subsequent experiments, using varying baseline conditions, found that globally related material affected naming latency in all cases, whereas the same locally related material that was used in the first study now had no facilitation effect. The globally related material had an immediate effect on naming times. The authors argue that the results are inconsistent with associatively based models and with various hybrid models of context effects and that a discourse-based model best accounts for the data.

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Words bearing high stress appear to be easier to process during sentence comprehension. Since sentence stress typically falls on content words this suggests that comprehension is organized according to a form class bias: process stressed items as content words. The present study measured reaction-time (RT) to word-initial phoneme targets on content and function words in sentence contexts. Half of the words of each type were stressed, half were not. In addition, a variable of "normality" of stress pattern was manipulated. It was found that RTs were shorter for stressed items independent of their syntactic function. No effect for content v. function words or normal v. non-normal stress pattern was observed. Results were interpreted within the framework of a predictive model utilizing the concept of semantic focus.

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