1．背景克雷克与洛克哈特（Craik＆Lockhart）对信息的处理水平和记忆的关系作了大量的开创性的研究。他们在1972年提出了记忆的“加工水平”模式。其中的关键概念是“处理深度”（depthofprocessing），即对学习材料的意义的处理的程度。他们认为，进入人脑的信息受到一系列不 1. Background Craik and Lockhart have done a lot of groundbreaking research on the relationship between the level of information processing and memory. In 1972, they proposed the “processing level” model of memory. The key concept here is “depth of processing”, the extent to which the meaning of learning materials is addressed. They think that the information that enters the human brain is affected by a series of noises