The document discusses how information is processed and stored in human memory. It explains that sensory input is first held briefly in the sensory store before either being transferred to short-term or long-term memory. Several techniques are suggested for improving memory retention, including understanding the material, linking new information to existing knowledge, repetition, grouping related ideas, and reviewing information multiple times over an extended period. The key is engaging the brain through a variety of study methods so that information can be encoded and stored in long-term memory through repetition and reinforcement.