This study evaluated the effectiveness of comprehension training embedded in a program that taught science content to 2nd graders. The program included instruction about the structure of compare-contrast expository text, emphasizing clue words, generic questions, graphic organizers, and the close analysis of well-structured text exemplars. This program was compared with a program that focused on the science content but included no compare-contrast training as well as with a no-instruction control. Regular classroom teachers (14 from 4 schools), randomly assigned to treatment, provided the instruction; 215 students (7-8 years old) participated. The study replicated acquisition and transfer effects found in an earlier study, that is, transfer to compare-contrast text with content related and unrelated to the instructional content (with no loss in the amount of science content acquired). The program also led to better performance on written and oral response measures and on 1 of the 2 measures involving authentic (less well-structured) compare-contrast text. These findings support and extend previous findings that explicit instruction in comprehension is effective as early as the primary-grade level.

This study evaluated the effectiveness of a comprehension program integrated with social studies instruction designed for at-risk second graders. The program included instruction in cause-effect text structure, emphasizing clue words, generic questions, graphic organizers, and the close analysis of specially constructed cause-effect target paragraphs. This program was compared (a) to a content-only program that focused only on social studies and did not include text structure instruction and (b) to a no-instruction control. Fifteen classroom teachers, randomly assigned to treatment, provided the instruction. The program improved the comprehension of instructional cause-effect texts, and there were transfer effects on some comprehension measures. The performance of the 2 instructed groups did not differ on any of the content measures, indicating that such integrated instruction can be accomplished without a loss in the amount of content acquired. This study supports our previous findings on the effectiveness of explicit instruction at the primary-grade level.

This study evaluated the effectiveness of an intervention for second graders at risk for academic failure, which taught reading comprehension embedded in social studies content. The intervention included instruction about the structure of cause/effect expository text, emphasizing clue words, generic questions, graphic organizers, and close analysis of well-structured examples of cause/effect text. It was compared to a program that focused on the same social studies content but without cause/effect training, and to a no-instruction control. Fourteen teachers, randomly assigned to treatment, provided the instruction; 197 7-and 8-year-olds participated. The intervention group demonstrated higher performance than the other groups on both sentence combining and answering comprehension questions. The 2 instructed groups did not differ on the social studies measures, and both were better than the no-instruction group; thus, embedding text structure instruction did not lessen the amount of social studies content acquired. These findings corroborated studies on another text structure (comparison) and extended previous work focused on cause/effect. New findings included, first, more robust group differences in performance than were found in an earlier cause-effect study because of a more precise identification of the instructional level appropriate for this population: the sentence, not the paragraph. Second, examining the sustainability of the intervention effects, a delayed posttest showed that after summer break, the intervention group performed better than the other groups on sentence combining, although not on answering a comprehension question.

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