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Effects of sleep on memory
Effects of sleep on memory
Sleep deprivation and cognitive performance
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Sleep Deprivation can Lead to False Memories
Alyssa N. Hernandez
California State University, Fullerton Sleep Deprivation Can Lead to False Memories
False memories are memories of something that did not happen (Radvansky, 2010). Steven J.Frendal and colleagues researched the effect of sleep deprivation on false memories. In this study researchers examined the relationship between self-reported sleep and false memories. Researchers suggest that under certain conditions, sleep deprivation can increase the risk of developing false memories (Frendal et al., 2014). To test this hypothesis, researchers provided participants with a misinformation task when participants were sleep deprived during event encoding. Frendal and
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Participants reported an average of 6.8 hr of sleep (SD = 2.0). 28 participants (15%) reported 5 or fewer hours of sleep. Researchers coded the participants as having restricted sleep. The remaining 165 participants (85%) were used as a reference group (Frendal et al., 2014). The news event was rated first , participants in the restricted-sleep group were significantly more likely than participants in the reference group to report that they had seen the video (54% vs. 33%), χ2(1, N = 193) = 4.2, p = .04, ϕc = .15. However, the results indicated that the groups did not differ when questioned in the follow-up interview. 21% of the restricted sleep group and 20% of the reference group claimed that they had seen the video, χ2(1, N = 193) = 0.03, p = .86. Therefore, restricted sleep was associated with initial false reports on the questionnaire, but not with false reports in the follow-up interview. Researchers compared the two group’s correct answers in the surveys as well as the amount of misinformation. There were no significant findings. Between the two groups there was only a 10% difference in incorporating the misinforming narratives as something they saw, making it an insignificant finding (Frendal et al.,
Steffens, M., & Mecklenbräuker, S. (2007). False memories: Phenomena, theories, and implications. Zeitschrift Für Psychologie/Journal Of Psychology, 215(1), 12-24. doi:10.1027/0044-3409.215.1.12
Memory is an important and active system that receives information. Memory is made up of three different stages sensory memory, short term memory, and long term memory. According to the power point presentation, sensory memory refers to short storage of memory that allows an individual to process information as it occurs. Short term memory refers to memory that is only available for a limited time. It is information that is held for seconds or sometimes even minutes. Long term memory refers to memory that is stored for a long period of time and it has an unlimited capacity with the ability to hold as much information as possible. Retrieval is key and it allows individuals to have memories. Episodic memory refers to memory for events that we
Rasch, B., & Born, J. (2008). Reactivation and consolidation of memory during sleep. Current Directions in Psychological Science, 17, 188-192. doi: 10.1111/j.14678721.2008.00572.x
People tend to forget the negative parts of the past, holding onto the positive and idealizing it to create nostalgia. It is easy to romanticize and live in the past in order to avoid difficulties in the present. The past becomes a false illusion and an enchanted safe haven from the corruption in reality. However, trying to apply false illusions into reality leads to isolation and corruption. F. Scott Fitzgerald’s book, The Great Gatsby, investigates the detrimental effects of craving the false sense of security in the past. Gatsby’s obsession of a false hope and idealization of the past contrasts the Lost Generation’s attempt to find self-fulfillment after war and the American Dream disillusioned them.
Can memories be biased? Researchers Postarino and Doyle-Portillio (2013); Bernstein and Loftus (2009); and Bartholomew (2009) found increasing evidence to suggest that the answer to this question is yes. Explicit and implicit memories are encoded differently, but it appears both can be fallible. Also worth noting, is that this can happen without a person conscious awareness. Kolb and Whishaw (2014) examined studies that gave participants a list of words, then gave them a second list. The second list contained some, but not all items from the first list, but many participants thought the word sugar was on both, when in fact it was only on the second. Similar words like cake, sweet, and candy were on the first so this seemed to confuse participants. This phenomena researchers refer to as false memory. False memory is different from a lie; unlike a lie, the individual in this case may give false account of the past truly believing that he or she is telling the truth. In other words, false memory can simply be defined as mental experience that is wrongfully considered as the truthful representation of the past. False memories can result in both minor and serious consequences Bernstein & Loftus, 2009; Bartholomew, 2009).
In class this week we saw cases where our memory fails when recalling information in the past and even seeing changes in real time in front of our eyes. Misinformation is when someone gives information that is incorrect without the intent of giving the incorrect information. This is more likely to happen in situations where the new information would fit someone’s schema of the situation. In a crime example, we can say that a robber has a knife in his hand and pointed it at someone, someone in the situation may have seen a gun instead of the knife and give that as a description. It is the same when someone misreads a word or letter as another in a license plate. It is not on purpose but it is because our brains use shortcuts to link events together to save time. In class we discussed why the new false memory might take hold as if it was the true memory. We said that since the new misinformation was more recent, it would be more easily remembered and projected into the memory. This blocking theory can be used to explain why when someone says they saw a gun at a crime scene to the other witnesses, the other witnesses may be more likely to say that there was a gun and not a knife
The horrible feeling of forgetting a coworker’s or an acquaintance’s name may be one of the most frustrating things a person can experience. This is a fact that many patients diagnosed with Alzheimer’s face on a reoccurring basis. Loss of memory is a common part of the aging process and is sometimes referred to as dementia. Alzheimer’s is the most common form of dementia and is not reversible in this day and age. In fact, 60 to 80 percent of dementia cases are Alzheimer’s and in 2015 more than 5.1 million cases age 65 or older were reported (Alzheimer’s Association, 2016). The most startling statistic is that by 2050, 14 million Americans and 81 million worldwide cases are expected (Wierenga & Bondi, 2011). While dementia is a part of Alzheimer’s it also affects an afflicted patient ability to perform day to day tasks, increased mood swings, and in the later stages, the ability to even walk or care for themselves. This horrible disease
Have you ever been an eyewitness at the scene of a crime? If you were, do you think that you would be able to accurately describe, in precise detail, everything that happened and remember distinct features of the suspect? Many people believe that yes they would be able to remember anything from the events that would happen and the different features of the suspect. Some people, in fact, are so sure of themselves after witnessing an event such as this that they are able to testify that what they think they saw was indeed what they saw. However, using an eyewitness as a source of evidence can be risky and is rarely 100% accurate. This can be proven by the theory of the possibility of false memory formation and the question of whether or not a memory can lie.
Kowalski, M.(1998, December). Applying the "two schools of thought" doctrine to the repressed memory controversy. The Journal of Legal Medicine. Retrieved September 14, 2000 from Lexis-Nexis database (Academic Universe) on the World Wide Web: http://www.lexis-nexis.com/universe
Repressed vs. false memories has been a critical debate in criminal cases and daily life problems. Throughout the years many people has claimed to recover repressed memories with the simplest triggers varying from a gaze to hypnosis. However, a large number of repressed memories claimed are considered as false memories because the images were induced through hypnosis and recalled during a therapy sesion. In the film “divided memories” the main intention was to inform the audience the importance of repressed memories and how those memories can change the lives of the people involved, whether the memory was considered repressed or false. It shows different cases of women being victims of sexual abuse in childhood and how they had those memories repressed. Additionally, the film
Memory is one of the most critical parts of cognition. It is important because it is involved in almost every aspect of cognition including problem solving, decision making, attention, and perception. Because of this importance, people rely on one’s memory to make important decisions. The value of one’s memory in this society is so high that it is used as evidence to either save one’s life or kill one’s life during murder trials. But as many of the cognitive psychologists know, human’s memory can cause many errors. One of these errors is false memory which is either remembering events that never happened or remembering events differently from the actual event. This finding of false memory raised big interests among psychologists and general public and many researches were done in order to find more about the false memory. The constructive approach to memory, which states that memory is constructed by person based on what really happened in addition to person’s other knowledge, experiences, and expectations, supports the idea of false memory. Just like what constructive approach to memory states, the false memory can be created by person’s knowledge, common biases, and suggestions. The present study was done in order to demonstrate one methodology that biases people to create and recall false memories. The present study is based on Deese’s experiment in 1959 and also on Roediger and McDermott’s experiment in 1995. The participants will be presented with sequence of words visually, and then they would have to classify a set of words as either in the sequence or not in the sequence. Our hypothesis is that people will create false memories and recall distractor words that are related to the sequence of words presented significantly m...
Recovered memories of childhood trauma and abuse has become one of the most controversial issues within the field of psychology. Controversy surrounding repressed memory - sometimes referred to as the memory wars – reached its’ peak in the early 1990s, where there was a rise in the number of people reporting memories of childhood trauma and abuse that had allegedly been repressed for many years (Lindsay & Read, 2001). There are a number of different factors that have contributed to the dispute surrounding recovered memories. Firstly, there is an ongoing debate about whether these types of memories actually exist or whether these accusations arose as a result of suggestive therapeutic procedures. In particular, this debate focuses on two main
The human psyche has a vital role in psychology, including the way humans interpret dreams and their sequence. Humans do not want to remember the truth of reality so we try and hide it in order to forget about it through the process of dreaming. Except, while trying to forget about the past, it leads to
The mistaken recollection of information or the recollection of an event that never happened is known as a false memory (Rajagopal & Montgomery, 2011). The study of false memories has been of interest to cognitive psychologists (Otagaar, Smeets & Scoboria, 2013) for many years as it implies that human memory is vulnerable to the influence of external information, it also implies that our ability to recall events may not always be accurate. One major issue that has arisen with the research on false memories is the argued validity of eyewitness testimony (Wade, Green & Nash, 2011). Eyewitness testimony is the verified report made by someone who witnessed a crime (Wade et.al., 2011). False memories can interfere with the correct recollection of criminal offences which can potentially result in inaccurate accusations of a crime (Wade et.al., 2011). Researchers have been interested in studying false memories to develop a better understanding of how false memories work, and to what extent our memories can be assumed accurate (Jou & Flores, 2013).
"Poor Sleep Has Social Causes and Consequences." Poor Sleep Has Social Causes and Consequences. N.p., n.d. Web. 03 May 2016.