Three experiments in the framework of Activity Theory explored the relationship between the questions of 104 male and 88 female adult learners (college students) and subsequent comprehension in a tutorial learning session. Questions asked during knowledge implementation aid comprehension more than do those asked during acquisition. (SLD)

Decoding, working memory, and domain-specific prior knowledge were studied as predictors of comprehension for 48 university undergraduate students after rewriting notes, rereading notes, or rereading a text. Working memory was most important for comprehension of text-implicit information, whereas knowledge was relatively more important for…

This study surveyed personal factors influencing reasoning of 61 adult citizens about federal budget deficit solutions. Reasoners were motivated to present a strong argument for their answers and generally did not offer counterargument unless prompted to do so. Education level was not significantly related to quality of argument. (SLD)

Unique associations between three families of mathematical knowledge and individual differences in the mathematics skills of 103 seventh and eighth graders were studied. Conceptual and procedural knowledge adequately explained individual differences in fraction solving and problem set-up accuracy, but only conceptual knowledge adequately expressed…

An experiment in which 90 undergraduate students were tested on simple and complex versions of a word-span task with high and low frequency words suggests that both word knowledge and a content-free working memory play causal roles in the relationship between word span and higher level cognitive tasks. (SLD)

Studied whether individual differences in print exposure and exposure to other media can account for individual differences in acquired declarative knowledge, controlling for confounds between experience and ability. Results with 268 undergraduates (90 males and 178 females) suggest that exposure is a significant contributor to knowledge…