The "Framework for K-12 Science Education" and the Next Generation Science Standards have called on teachers to shift from having students "learn about" science topics to having students engage in a process of "figuring out" how and why natural phenomena occur. These reform documents push teachers away from a…

The adoption of computer-mediated communication (CMC) has been growing as an effective approach to facilitating second language (L2) and foreign language (FL) acquisition. Existing literature implementing CMC has investigated the efficacy of various devices, including video conferencing, emails, and virtual worlds. Nevertheless, few studies have…

Two ways of measuring change are presented and compared: A conventional "change score", defined as the difference between scores before and after an interim period, and a process-oriented approach focusing on detailed analysis of conceptually defined response patterns. The validity of the two approaches was investigated. Vocabulary…

Research has demonstrated that interspersing mastered tasks with new tasks facilitates learning under certain conditions; however, little is known about factors that influence the effectiveness of this treatment strategy. The initial purpose of the current investigation was to evaluate the effects of similar versus dissimilar interspersed tasks…

Feedback effectiveness and efficiency were studied using 120 college students practicing 40 difficult vocabulary items in 4 experiments. The significant impact of immediate feedback was seen in immediate and delayed posttests. Conditional probability of feedback as a corrective function is discussed via a limited model of general working memory.…