Two subject-verb agreement error elicitation studies tested the hierarchical feature-passing account of agreement computation in production and three timing-based alternatives: linear distance to the head noun, semantic integration, and a combined effect of both (a scope of planning account). In Experiment 1, participants completed subject noun…

Data from two studies at Gladstone High School in California support the assumption that daily writing and daily correction and grading based exclusively on mechanics do improve a student's ability to write more correctly by eliminating common errors. (Author)