Two experiments investigated learning outcomes and comprehension processes when students learned about the heart and circulatory system using (a) text only, (b) text with simplified diagrams designed to highlight important structural relations, or (c) text with more detailed diagrams reflecting a more accurate representation. Experiment 1 found…

Effects of a theoretically based LOGO programing environment on executive metacognitive abilities were studied for 48 third graders who took pretests and posttests after LOGO training or no training. The LOGO group scored higher than comparisons on two metacomponential measures: correctness of response and use of an individual metacomponent. (SLD)