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How does the use of technology help criminal investigations
How accurate are eyewitness testimonies
How accurate are eyewitness testimonies
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Empirical studies on context-dependent memory date back to Carr Harvey (as cited in Smith & Vela, 2001). Memory is context-dependent, when contextual cues affect remembering (Morris & Gruneberg, 1994). Context-dependent memory implies that contextual information is stored along with the target information. Findings from the research (Godden & Baddeley, 1975; Smith, Glenberg, & Bjork, 1978) indicate that context change alters memorization and recall processes. According to Tulving (1973) the usage of contextual cues can improve the retrieval processes. This notion has been used and its relevance has been further proved by a variety of research.
This essay will discuss context-dependent research on one of the aspects of everyday memory, on eyewitness testimony. It will particularly focus on two directions of eyewitness testimony: cognitive interview and face identification. The discussion will go further on how that research can be applied in real life to facilitate the accuracy of eyewitnesses’ recall and recognition.
The essay will aim to show that despite some obvious limitations of the research, its correct application and attempts to neutralise the hindrances can broadly improve the results of testimonies.
The discussion will start with the cognitive interview area, and will be followed by the face identification topic.
Cognitive interview (or CI) is an interview protocol, which is used to enhance the memories of eyewitnesses by using mnemonic ...
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...& Bjork, R. A. (1978). Environmental context and human memory. Memory & Cognition, 6(4), 342–353. doi:10.3758/BF03197465
Smith, S. M., & Vela, E. (2001). Environmental context-dependent memory: A review and meta-analysis. Psychonomic Bulletin & Review, 8(2), 203–220. doi:10.3758/BF03196157
Tulving, E., & Thomson, D. M. (1973). Encoding specificity and retrieval processes in episodic memory. Psychological Review, 80(5), 352–373. doi:10.1037/h0020071
Wilcock, R. A., Bull, R., & Vrij, A. (2007). Are old witnesses always poorer witnesses? Identification accuracy, context reinstatement, own-age bias. Psychology, Crime & Law, 13(3), 305–316. doi:10.1080/10683160600822212
Winograd, E., & Rivers-Bulkeley, N. T. (1977). Effects of changing context on remembering faces. Journal of Experimental Psychology: Human Learning and Memory, 3(4), 397–405. doi:10.1037/0278-7393.3.4.397
Roediger III, H. L., Watson, J. M., McDermott, K. B., & Gallo, D. A. (2001). Factors that determine false recall: A multiple regression analysis. Psychonomic Bulletin & Review, 8(3), 385-407.
Over the years, memory have been researched and debated, however there are two theories that have explained extensively and are highly recognised by psychologist in the cognitive field of psychology and scientist alike, on how we process experiences and turn them into memories. These theories include the Atkinson and Shiffrin (1968) Multi-store Model of Memory and Baddeley and Hitch (1974) Phonological Loop Model of Memory. This essay aims to compare, contrast and evaluate these models of memory, with supporting evidence and empirical research.
Eyewitnesses play a critical role in criminal justice systems throughout the world and are often essential in identifying, charging, and ultimately convicting perpetrators of crimes.
Marsh, R. L., Cook, G. I., & Hicks, J. L. (2006). The effect of context variability on source memory. Memory & Cognition (Pre-2011), 34(8), 1578-86.
Human memory is flexible and prone to suggestion. “Human memory, while remarkable in many ways, does not operate like a video camera” (Walker, 2013). In fact, human memory is quite the opposite of a video camera; it can be greatly influenced and even often distorted by interactions with its surroundings (Walker, 2013). Memory is separated into three different phases. The first phase is acquisition, which is when information is first entered into memory or the perception of an event (Samaha, 2011). The next phase is retention. Retention is the process of storing information during the period of time between the event and the recollection of a piece of information from that event (Samaha, 2011). The last stage is retrieval. Retrieval is recalling stored information about an event with the purpose of making an identification of a person in that event (Samaha, 2011).
Atkinson, R.C. & Shiffrin, R.M. (1968). Human memory: A proposed system and its control process.
There has been considerable debate worldwide, regarding the accuracy of eyewitness testimony in the criminal justice system. Particularly, arguments have surrounded wrongful convictions that have resulted from incorrect eyewitness evidence (Areh, 2011; Howitt, 2012; Nelson, Laney, Bowman-Fowler, Knowles, Davis & Loftus, 2011). The purpose of this essay is to consider psychological research about the accuracy of eyewitness testimony and its placement in the criminal justice system. Firstly, this essay will define how eyewitnesses and their testimonies are used within the criminal justice system and the current debate surrounding its usage. Secondly, the impact of post-identification feedback will be used to show the affect on the confidence of a witness. Thirdly, studies around gender related differences will show how a witnesses gender can affect memory recall and accuracy. Fourthly, empirical studies will be used to highlight how a psychological experience called change blindness can cause mistakes in eyewitness identification. Finally, the effect of cross-examination will be used to explore the impact on eyewitness accuracy. It will be argued, that eyewitness testimony is not accurate and highly subjective, therefore, the criminal justice system must reduce the impact that eyewitness testimony is allowed to have. Developing better policies and procedures to avoid wrongful convictions by misled judges and jury members can do this.
The article How to Tell If a Particular Memory Is True or False by Daniel M. Bernstein and Elizabeth F. Loftus, addresses the various techniques used by cognitive scientists and other researchers in hopes of distinguishing true from false memories. For this article Loftus and Bernstein, memory researchers, chose to discuss the different methods currently used, rather than trying to find new ways to tell if a particular memory is true or false. Their findings in these three different approaches are very interesting, and leads us to think critically of the veracity of true and false memories.
The term that best explains the barriers to eyewitness memory is widely regarded as verbal overshadowing. The notion of verbal overshadowing has been coined as the inability to provide explicit memories due to the cognitive barriers people possess to depict accurately the events that have transpired. On a daily basis, individuals across the United States are sentenced to lengthy prison sentences resultant of wrongful convictions (Innocence Project, 2016). To illustrate the ambivalences caused by verbal overshadowing, if it even exists, behavioral scientists conducted a study to demonstrate the disparities. Many researchers have designed an experiment to measure a person’s cognitive ability to remember accurately a perpetrator that has committed a crime in a police lineup (Schooler & Engstler-Schooler,
Quas, J. A., Goodman, G. S., Bidrose, S., Pipe, M., Craw, S., & Albin, D. S. (1999). Emotion and memory: Children's long-term remembering, forgetting, and suggestibility. Journal of Experimental Child Psychology, 72, 235-270.
Memory is a cognitive function of the brain that is often taken for granted. Memory may have many purposes, but most importantly it is essentially a record of an entire life span. From this perspective memory is the most important aspect of consciousness. Unfortunately, through formal experimentation it has been shown that memory is fairly inaccurate, inconsistent, and often influenced by our own experiences as well as the bias of others. Memory is not only affected during an observed event, but there are instances where memory can be influenced after an event as well. There are also instances where memory can be affected retroactively due to personal experiences and biases. Incorrectly recalling the memories of one’s life is usually not detrimental, but the flawed nature of long-term and short-term memory functions becomes a serious matter in regards to criminal eyewitness testimony. In the justice system eyewitness reports are legitimate and can be crucial in the judging process. The justice system was constructed to rely on testimony that is often inaccurate and inconstant in many ways.
The human brain consists of many subsystems within the long-term memory. One of which is episodic memory. Episodic Memory is the remembrance of a phenomenal personal experience in terms of what, when, and where. This memory begins by retrieving information such as, words, objects, or faces; using this knowledge the episodic memory finds links and slowly transitions into recalling the complete memoir.
Farrants, J. (1998, September). The 'false' memory debate. Counseling Psychology Quarterly. Retrieved September 14, 2000 from ProQuest database (Bell & Howell Information and Learning-ProQuest) on the World Wide Web: http://proquest.umi.com/pqdweb
Memory is the tool we use to learn and think. We all use memory in our everyday lives. Memory is the mental faculty of retaining and recalling past experiences. We all reassure ourselves that our memories are accurate and precise. Many people believe that they would be able to remember anything from the event and the different features of the situation. Yet, people don’t realize the fact that the more you think about a situation the more likely the story will change. Our memories are not a camcorder or a camera. Our memory tends to be very selective and reconstructive.
According to Sternberg (1999), memory is the extraction of past experiences for information to be used in the present. The retrieval of memory is essential in every aspect of daily life, whether it is for academics, work or social purposes. However, many often take memory for granted and assume that it can be relied on because of how realistic it appears in the mind. This form of memory is also known as flashbulb memory. (Brown and Kulik, 1977). The question of whether our memory is reliably accurate has been shown to have implications in providing precise details of past events. (The British Psychological Association, 2011). In this essay, I would put forth arguments that human memory, in fact, is not completely reliable in providing accurate depictions of our past experiences. Evidence can be seen in the following two studies that support these arguments by examining episodic memory in humans. The first study is by Loftus and Pickrell (1995) who found that memory can be modified by suggestions. The second study is by Naveh-Benjamin and Craik (1995) who found that there is a predisposition for memory to decline with increasing age.