Chapter seven discusses the different types of memory and how memory works. The three types of memory are sensory memory, short-term memory, and long-term memory. The chapter describes how all three work together as a "factory assembly line" to the function of our memory. It also discusses the differences between the memories, such as the amount of time a memory lasts, 20 seconds for short-term and years or even decades for long-term. One thing I found interesting in this chapter is how sometimes our memory can cause us to have illusions of memories that have happened or sometimes even make up false memories. There are three steps of retaining memories and three steps for measuring our memories. The three steps to retaining memories are encoding, the process of sending memories to our memory bank, storing our memories, and retrieval, getting memories from our memory banks. The three steps of measuring our memories are recalling, remembering our memories on our own, recognition, choosing previously remembered information from other various memories, and relearning, how quickly we learn information after previously learning it.