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The Seven Sins of Memory: How the Mind Forgets and Remembers is a book (ISBN 0-618-21919-6) by Daniel Schacter, former chair of Harvard University's Psychology Department and a leading memory researcher. The book revolves around the theory that "the seven sins of memory" are similar to the Seven deadly sins, and that if one tries to avoid committing these sins, it will help to improve one's ability to remember. He argues that these features of human memory are not necessarily bad, and that they actually serve a useful purpose in memory. For instance, persistence is one of the sins of memory that can lead to things like post traumatic stress syndrome. However, persistence is also necessary for long-term memory, and so it is essential. Overview Schacter asserts that "memory's malfunctions can be divided into seven fundamental transgressions or 'sins'."[1] These are transience, absent-mindedness, blocking, misattribution, suggestibility, bias, and persistence. The first three are described as sins of omission, since the result is a failure to recall an idea, fact, or event. The other four sins (misattribution, suggestibility, bias, and persistence) are sins of commission, meaning that there is a form of memory present, but it is not of the desired fidelity or the desired fact, event, or ideas. Types of Memory Failure Transience Transience refers to the general deterioration of a specific memory over time. A degree of transience is normal with aging; however, decay of or damage to the hippocampus and temporal lobe can cause extreme forms of aging (Murray, 2003). Much more can be remembered of recent events than those further in one's past. This is especially true with episodic memory, because every time an episodic memory is recalled, it is re-encoded within the hippocampus, altering the memory each time one recalls it. Transience is caused because of interference. Interference is the idea in which the retrieval of a memory can be disrupted by the presence of related traces in memory (Baddeley, Eysenck, & Anderson). There are two types of interference: proactive interference (old information inhibits the ability to remember new information), and retroactive interference (new information inhibits the ability to remember old information). Absent-mindedness Absent-mindedness is a lack of attention and forgetting to do things. It operates when a memory is encoded and retrieved. This form of memory breakdown involves problems at the point where attention and memory interface. Common errors of this type include misplacing keys or eyeglasses, or forgetting appointments, because at the time of encoding sufficient attention was not paid to what would later need to be recalled.

Blocking Blocking is when the brain tries to retrieve or encode information, but another memory interferes with it. Blocking is a primary cause of Tip of the tongue phenomenon (a temporary inaccessibility of stored information). Misattribution Misattribution is the first of the sins of commission which are discussed in the book. It entails correct recollection of information with incorrect recollection of the source of that information allowing the belief of hearing or seeing something that did not occur. For example, a person who witnesses a murder after watching a television program may incorrectly blame the murder on someone he or she saw on the television program. This error has profound consequences in legal systems because of its unacknowledged prevalence and the confidence which is often placed in the person's ability to impart correctly information critical to suspect identification. Suggestibility Suggestibility is somewhat similar to misattribution, but with the inclusion of overt suggestion. It is the acceptance of a false suggestion made by others. Memories of the past are often influenced by the manner in which they are recalled, and when subtle emphasis is placed on certain aspects which might seem likely to a specific type of memory, those emphasized aspects are sometimes incorporated into the recollection, whether or not they actually occurred. For example, a person sees a crime being committed by a redheaded man. Subsequently, after reading in the newspaper that the crime was committed by a brown-haired man, the witness "remembers" a brown-haired man instead of a redheaded man. Loftus and Palmer's work into leading questions is an example of such suggestibility. Bias The sin of bias is similar to the sin of suggestibility in that one's current feelings and worldview distort remembrance of past events. This can pertain to specific incidences and the general conception one has of a certain period in one's life. Memories encoded with a certain amount of stimulation and emotion are more easily recalled. Thus, a contented adult might look back with fondness on his or her childhood, induced to do so by positive memories from that time which might not be actually representative of his/her average mood during his/her childhood. Persistence This failure of the memory system involves the unwanted recall of information that is disturbing. The remembrance can range from a blunder on the job to a truly traumatic experience, and the persistent recall can lead to formation of phobias, post-traumatic stress disorder, and even suicide in particularly disturbing or intrusive instances. Seven Penances While attending a science conference in Orlando, Florida in 2004, Scott S. Haraburda heard the author present these seven sins to U.S. Army scientists and program managers. After conducting several experiments to validate Dr. Schacter's identification of these fundamental transgressions, Haraburda developed actions to help us improve our memories, which he termed 'penances.'[2][3] 1.	Obtain information quickly after an event, when it’s fresh in people’s minds. 2.	Use a prioritized task list. 3.	Take notes from important events, including meeting minutes 4.	Record important events and milestones daily. 5.	Use neutrally worded questions when soliciting information. 6.	Understand the basis or perspective of the person providing the information. 7.	Understand and recognize the symptoms of PTS.

References ↑ D. Schacter. The Seven Sins of Memory, Houghton Mifflin, 2001. p.4↑ Haraburda. Scott S. (2007). "PROGRAM MANAGEMENT: The ‘Seven Sins of Memory’ – How They Affect Your Program" (PDF). Defense AT&L 36 (1): 30–32. Retrieved 2 July 2015. ↑ Henschke, John A. (2009). "Chapter 1: Movement Toward Staying Ahead of the Curve in Developing and Managing Human Capital" (PDF). In Wang, Victor C.X.; King, Kathleen P. Human Performance Models in the Global. Charlotte, NC: Information Age Publishing. p. 19. ISBN 978-1-60752-011-5. Retrieved 3 July 2015. Baddeley, A., Eysenck, M. W., & Anderson, M. C. (n.d.). Memory. New York, NY: Psychology Press. Murray, B. (2003, October). The Seven Sins of Memory. American Psychological Association, 34(9), 28.