Many students struggle with statistical concepts such as interaction. In an experimental group, participants took a paper-and-pencil test and then were given training to establish equivalent classes containing four different statistical interactions. All participants formed the equivalence classes and showed maintenance when probes contained novel negative exemplars. Thereafter, participants to...

s International, 48 (7), 2137.Llabre, M. M., Clements, N. E., Fitzhugh, K. B., Lancelotta, G., Mazzagatti, R. D., &Quinones, N. (1987). The effect of computer-administered testing on test anxiety andperformance. Journal of Educational Computing Research, 3, 429-433.Lord, F. M. (1977). Some item analysis and test theory for a system of computer-assisted testconstruction for i...

Pencil traces drawn on print papers are shown to function as strain gauges and chemiresistors. Regular graphite/clay pencils can leave traces composed of percolated networks of fine graphite powders, which exhibit reversible resistance changes upon compressive or tensile deflections. Flexible toy pencils can leave traces that are essentially thin films of graphite/polymer composites, which show...

We introduce a new combinatorial auction format based on a simple, transparent pricing mechanism tailored for the hierarchical package structure proposed by Rothkopf, Pekeč, and Harstad (1998) to avoid computational complexity. This combination provides the feedback necessary for bidders in multi-round auctions to discern winning bidding strategies for subsequent rounds and to coordinate respon...