John Dunlosky described an enormous "meta-analysis" that he and his colleagues conducted to identify effective learning techniques that students can use to improve their learning. What three strategies did he identify as being the most successful for learning and memory? John Dunlosky描述了他和他的同事们进行的一项庞大的整合研究。这项研究证实了一些学生可以使用的有效的学习技巧。他证实哪三种策略是学习和记忆最有效的?