Contemporary research has found that memory is much more than the process for recalling information that has been learned and retained. Memory is central to all human endeavors. Memory is the sine qua non of human psychology. How humans process, store, retrieve, and use memory is intrinsically interesting. This book is about human memory: how it works, how it sometimes does not work, why it is important, and why it is interesting. It describes the major structural and functional theories that guide our understanding of memory. The modal model has three memory buffers: sensory information store, short-term memory and long-term memory. The book focuses on everyday functions of memory, including memorizing things, remembering to do things (prospective memory), and recalling how to do things, such as skills, procedures, and navigation. Disorders of memory including Alzheimer’s and amnesia are examined along with exceptional memory skills, such as the phenomenon of individuals with highly superior autobiographical memory. The book also addresses the intriguing and controversial topics of repressed and recovered memories, the validity of memory in courtroom testimony, and the effects of remembering traumatic events.