An Article Review of “Memory blindness: Altered memory reports lead to distortion in eyewitness memory” by Cochran et al. (2016)
Introduction:
Cochran et al (2016) provide a case study analysis of the temporal nature of memory in suspect lineups and crimes being investigated by law enforcement. The study involves a longitudinal evaluation of participants that are given evidence of a crime (through slideshows) that allows them to ascertain the criminal act or to choose a suspect in a lineup. At a later time, the participants are given altered information on the crime, which revealed a greatly distorted memory of the crimes that the participants did not remember. This misinformation was an attempt to trick the participants into affirming
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Multiple-choice questionnaires were used for Experiment 1 to identify false answers. Experiment 2 was partially done online, which allowed the stu8dents to make choices without direct contact with the authors of the study.
Analysis & Results:
Experiment 1 results found that many of the students failed to remember the initial data provided to them at the onset of the study, which provided the effect of misinformation on the memory of the participant: “These analyses revealed a significant main effect for misinformation items, F(1, 163) = 9.89, p = .002, ηp2 = .06, 90 % CI for effect size = [.01, .12] (Cochran et al, 2016, p.721). This data confirms that the students had not retained the original memory of the crimes committed, which resulted in a large-scale choice blindness. In this manner, the multiple –choice segment of this study exposed memory lapses as part of the re-evaluation process of the participant 's memories. Therefore, misinformation was not properly identified in the remembrance of these criminal scenarios. Experiment 2 also proved successful for choice blindness in that the slide show provided for the students at the first-stage was altered in the second-stage. The author’s utilized a “target” and “filler” option for student’s to choose from, yet many of the students did not accurately remember the
The study of creation of false memories has been a topic of interest since the 1930s when Bartlett (1932) conducted the first experiment on the topic. Though the results of this experiment were never replicated, they contributed greatly to research by distinguishing between reproductive and reconstructive memory (Bartlett 1932 as cited in Roediger & McDermott, 1995). Reproductive memory refers to accurate production of material from memory and is assumed to be associated with remembering simplified materials (e.g., lists). Reconstructive memory emphasizes the active process of filling in missing elements while remembering and is associated with materials rich in meaning (e.g., stories).
Information is the lifeblood of a criminal investigation. The ability of investigators to obtain useful and accurate information from eyewitnesses of crimes is crucial to effective law enforcement, yet full and accurate recall is difficult to achieve (Stewart, 1985). Such elicitation of complete and accurate recall from people is important in many aspects of life; specifically, eyewitness recall may determine whether a case is solved. Principle advocates of the cognitive interview (Fisher, Geiselman, Holland & MacKinnon,
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
However, factors such as interactions with other witnesses and the influence of media outlets cannot be accounted for. In addition, the small sample size of 13 participants means the results are not as reliable and cannot be generalised to the population at large. One possible factor which may influence the results is that witnesses were within close proximity to the events which transpired which can influence memory as well as not being applicable to many crimes whereby the witnesses only see part of the crime or a shadow of the perpetrator. An alternative explanation would be that flashbulb memory was at work here.
Is our justice system fair? Is our justice system truly set out to do what it was meant to do? Or are there social factors and memory errors that come into play that can change a conviction outcome. In today’s court rooms we have, Defense attorneys, Prosecutors, judges, juries, evidence, forensics experts, witness testimonies, and of course the human memory. What better type of evidence than the human memory, right? Unfortunately, human memory is subject to the power of suggestion and unable to truly recall an event when told to recall. In other words, the story may not be the same as the one that actually happened the day of that event because many variables come into play like cross examinations and the way a question can be asked can alter the answer or how the event was perceived. The main focus of this paper is to see how the human brain is not able to effectively recall events which could possibly convict an innocent person of wrong doing. Also how lawyers use the misinformation effect to their advantage. In order to understand how something as simple as a question can decide a person’s faith we must first answer some questions. First, How does memory actually work and how is memory retrieved when your need to answer a question or being cross examined? Second, how does the misinformation effect play a role when a witness needs to testify against the defense or vice versa? Third, how can structuring a word or sentence effect the outcome of a conviction?
The phenomenon of explaining false memory occurrences is rising. Researchers have developed a paradigm known as “Deese-Roediger-McDermott paradigm” in efforts to examine false memories in depth (Dehon, Laroi & Van der Linden, 2011). In the DRM paradigm, participants are introduced to and asked to memorize a list of correlated words congregating towards a vital subject word that is never introduced (Dehon, Laroi & Van der Linden, 2011). The rate that participants recall this false decoy is alarming. Researchers have provided several explanations to explain for the false memories in the DRM paradigm (Dehon, Laroi & Van der Linden, 2011). The two most notable in explaining false memories in the DRM paradigm are the fuzzy-trace theory and the activation/monitoring theory (Dehon, Laroi & Van der Linden, 2011). While the two theories are particularly dissimilar, they both sustain that information developing throughout list encoding attributes an essential part in false memory construction (Dehon, Laroi & Van der Linden, 2011).
An eyewitness can change the course of an investigation. However, how reliable that can be? People believe that we remember an event as exactly as it was, such as replaying the facts. Elizabeth Loftus is one of the leading researchers in the area of memory, and she found that memories are not accurately re-created. Reconstructing facts from our lives cannot be harmful, but it can be critical when deciding a criminal event. Loftus studies demonstrated that a simple wording question might change the eyewitness answer.
The article, When I Witnesses Talk, covers the issue of eyewitness testimonies and their reliability with memory conformity. Often when two people experience the same event they both have very different recollections of the occurrence. One event within the journal article incorporates the murder of Jill Dando, within this investigation there was a lineup where 16 witnesses were asked to identify the suspect, where only 1 of the 16 witnesses recognized him. The police conducted a second lineup where for example one witness stated that they were 95% sure that the suspect that they identified was at the scene of the crime, yet in the original lineup that person was unable to identify anyone from the lineup. One key piece of information was discovered,
“Wrongfully convicted at age 25, Calvin Johnson received a life sentence for the rape of a Georgia woman after four different women identified him. Exonerated in 1999, he walked out of prison a 41-year old man. The true rapist has never been found, (The Justice Project).” Eyewitness testimony is highly relied on by judges, but it can not always be trusted. Approximately 48% of wrong convictions are because of mistaken identity by eyewitnesses (The Psychology of Eyewitness Testimony). After we discovered this information, we became curious as to whether in a testimony, the eyewitness’ memory is more reliable after a short period of time or after a longer period of time? According to previous experiments, eyewitness testimony is unreliable. Likely, we want to know if a testimony that is given two to three hours after a crime has taken place is more reliable than a testimony given after a longer period of time.
The experiment consisted of 6 trials that contained words such as: sleep, bed, tired etc. The participants were asked to look at the rectangle on the screen before starting the trials. In the first trial, the participants were asked to press the “start trial” button because a fixation dot would appear in the middle of the screen. The participants were asked to stare at the computer until a sequence of words appeared, with each word was presented for one second. After a full sequence was presented, a set of buttons were shown, each labeled with a word. Some the words were on the list, and some were not. The participant’s task was to click or tap on the buttons to indicate which words were in the sequence. The sequence of words consisted of the actual words shown or related or unrelated words. For example, some trials consisted of all sleep related content to see if the participant would select items that were related or select items that were not in the sequence. After identifying the words that were shown in the sequence, they would receive feedback on the accuracy of their memory. After the participants were done
While these studies do not fully exemplify the harmful reality of false memories, they take a step towards understanding how these false memories might occur in real-world settings. As Loftus (1997) discusses, it is only natural to wonder whether or not this research is applicable to real-world situations such as being interrogated by law officers or in psychotherapy. What researchers have learned, and can apply to this practical problem is that there are social demands on individuals to remember and come up with detailed memories. Not only that, but memory construction through suggestion and imagining events has been shown to be explicitly encouraged when people are having trouble remembering events (Loftus, 1997).
Mark L. Howe and Martin A. Conway’s article Memory and the Law: Insights from Case Studies discusses how memories that have to be recalled or often not properly encoded because the memory took place during a time of extreme stress or under the influence of drugs or alcohol. This is difficult when memory is often an important piece of evidence in a trial, but due to a chance of failure in encoding or retrieval it is not always the most reliable evidence therefore it should be supplemented with more reliable evidence.
Memory seems to be less secure and reliable than is popularly thought. Bartlett and other social scientists have tested the security of our memory and have accumulated significant results showing the limitations of our memory and the extent to which our abilities of recall often play us up. Bartlett, for instance, discovered that people formed memories in line with their cultural indoctrination and schemas. Following Bartlett's publicized results, researchers have been interested in finding determinants and characteristics of false recall (i.e. reasons for construction of faulty memories). Some researchers posited that backwards associations prompted this false recall, whilst others suggested that it was the lapse of time subsequent to the event that caused these illusionary memories.
Researchers studied whether illusory information could produce an error on a test when participants already knew the information. The participants read two short stories involving errors with common knowledge such as the largest ocean being the Atlantic Ocean, when it is really the Pacific Ocean. After solving puzzles for five minutes, participants were to recognize the errors that conflicted with their prior knowledge. The researchers discovered that one exposure to false information in the stories caused participants to miss the correct answers on their final test. Knowledge neglect—having correct information stored in memory, but failing to retrieve it when necessary—was the root cause for this misinformation effect (Fazio, Barber, Rajaram, Ornstein, & Marsh, 2013). False memories may be caused by a similar misinformation effect where people may be under certain physiological conditions, and are unable to retrieve a memory.
Memory facilitates necessary functions in daily life activities, but it is not a perfect mechanism in operation. Goldstein (2011) states that memory is, “…the process involved in retaining, retrieving, and using information about stimuli, images, events, ideas, and skills after the original information is no longer present” (p.116). There are many adaptive functions within the complexities of the human memory system and the interlinked constructs between each function leave room for doubt in the accuracy of recollection. Study of the human mind has opened avenues of discovery on the inner workings of our brains and the resulting knowledge suggests that humans are prone to creating false memories and even remembering things that never actually happened. A great deal of information has been written explaining the nature of memory errors and within the following pages a real-life case offers a glimpse into how recall distortions and memory errors can wield unpleasant consequences. Memory errors can be avoided with a significant effort, but the truth remains that no one is perfect and memories are subject to individual bias.