Previous research on the role of prior skills like proportional reasoning skills for the development of mathematical concepts offers conclusions such as "more (prior skills) is better (for later learning)." Insights, which prior skill "level" goes along with which "level" of learning outcomes, may advance the…

Despite its recognized importance for cultural transmission, little is known about the role imitation plays in language learning. Three experiments examine how rates of imitation vary as a function of qualitative differences in the way language is used in a small indigenous community in Oaxaca, Mexico and three Western comparison groups. Data from…

Measured effects of age, prior opinions, and peer interaction on first, third, and sixth graders and college students as they expressed their opinion on a topic while alone (pretest), while with a peer (test), and again while alone (posttest). Found that age affected the number, type, and elaboration level of pretest reasons for holding a given…