海量图书期刊资源，随时随地畅享阅读乐趣
A Motivational Perspective on the Relation between Mental Effort and Performance: Optimizing Learner Involvement in InstructionFred Paas, Juhani E. Tuovinen, Jeroen J. G. van Merriënboer and A. Aubteen Darabi · Educational Technology Research and Development · 2005