Memory development: Difference between revisions

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The development of memory in children becomes evident within the first 3 years of a child's life as they show considerable advances in [[declarative memory]], a child's memory throughout their development.<ref name="Learning & memory">{{Cite book|title=Learning & memory|date=2003|publisher=Macmillan Reference USA|others=Byrne, John H.|isbn=0-02-865619-9|edition=2nd|___location=New York|oclc=49977789}}</ref> This enhancement continues into adolescence with major developments in [[short term memory]], [[working memory]], [[long term memory]] and [[autobiographical memory]].<ref name="bad">{{cite book|last=Siegler|first=R. S.|title=Children's Thinking|year=1998|publisher=Prentice Hall|___location=Upper Saddle River, NJ|edition=3rd|authorlink=Robert S. Siegler|isbn=978-0-13-397910-7}}{{page needed|date=August 2016}}</ref>
 
The development of memory in adults, especially older adults, is often seen more negatively. Most Adults will face symptoms of memory loss in both their short- and long-term memory, Alzheimer’sAlzheimer's is a prime example of this.<ref>{{Cite journal|last1=Jørgensen|first1=Isabella Friis|last2=Aguayo‐Orozco|first2=Alejandro|last3=Lademann|first3=Mette|last4=Brunak|first4=Søren|date=2020-04-27|title=Age‐stratified longitudinal study of Alzheimer's and vascular dementia patients|journal=Alzheimer's & Dementia|volume=16|issue=6|pages=908–917|doi=10.1002/alz.12091|pmid=32342671|pmc=7383608|issn=1552-5260}}</ref>
 
Recent research on the development of memory has indicated that declarative, or explicit memory, may exist in infants who are even younger than two years old. For example, newborns who are less than 3 days old demonstrate a preference for their mother’smother's own voice, resulting the significance of a strong and powerful connection to the mother.<ref>{{cite journal |last1=DeCasper |first1=A. |last2=Fifer |first2=W. |title=Of human bonding: newborns prefer their mothers' voices |journal=Science |volume=208 |issue=4448 |pages=1174–6 |year=1980 |pmid=7375928 |doi=10.1126/science.7375928 |bibcode=1980Sci...208.1174D |citeseerx=10.1.1.553.1738 }}</ref>
 
==Cognitive Neuroscience of Memory Development==
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===Central Executive===
Central executive is an integral of the working memory, and involves the all- inclusive attentional control of the working memory system.<ref name="Learning & memory"/> Initially Kail and Saweikis inferred that the central executive had an important role of storing some information and that the central executive reinforced long-term memory and has the potential to designate resources for focusing, dividing and switching attention.<ref name="Learning & memory"/> Currently the model of the central executive excludes the possibility of any type of memory storage.<ref name="Learning & memory"/> However, it does include the understanding that it does have a responsibility for the control and reinforcement of attention.<ref>{{Cite book|last=Baddeley, Alan D., 1934-|title=The psychology of memory|date=1976|publisher=Basic Books|isbn=0-465-06736-0|oclc=2118601}}</ref><ref>{{Citation|last=Baddeley|first=Alan|title=Working Memory, Thought, and Action|chapter=What limits working memory span?|date=2007-03-15|pages=189–210|publisher=Oxford University Press|doi=10.1093/acprof:oso/9780198528012.003.0011|isbn=978-0-19-852801-2}}</ref><ref name=":1">{{Cite journal|last=Baddeley|first=Alan|date=November 2000|title=The episodic buffer: a new component of working memory?|journal=Trends in Cognitive Sciences|volume=4|issue=11|pages=417–423|doi=10.1016/s1364-6613(00)01538-2|pmid=11058819|s2cid=14333234|issn=1364-6613}}</ref><ref name="Learning & memory"/> In children from 2-42–4, the memory storage capacity limitation constrains complex comprehension processes. As the child grows older however, less processing is necessary which opens more storage space for memory.<ref name="gather">{{cite journal |last1=Gathercole |first1=Susan E. |title=The Development of Memory |journal=Journal of Child Psychology and Psychiatry |volume=39 |issue=1 |pages=3–27 |year=1998 |pmid=9534084 |doi=10.1111/1469-7610.00301 }}</ref><ref>{{cite journal |last1=Eacott |first1=M. J. |last2=Crawley |first2=R. A. |title=The offset of childhood amnesia: Memory for events that occurred before age 3 |journal=Journal of Experimental Psychology: General |volume=127 |issue=1 |year=1998 |pages=22–33 |doi=10.1037/0096-3445.127.1.22 |pmid=9503650}}</ref><ref name=pmid17654279>{{cite journal |last1=Jack |first1=Fiona |last2=Hayne |first2=Harlene |title=Eliciting adults' earliest memories: Does it matter how we ask the question? |journal=Memory |volume=15 |issue=6 |pages=647–63 |year=2007 |pmid=17654279 |doi=10.1080/09658210701467087 |s2cid=5775522 }}</ref>
 
===Phonological Loop===
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The episodic buffer is something that was added to Baddeley’ s working model in memory in the year 2000<ref name=":1" />. It is believed to act as a connector of various sources within the memory process. The episodic buffer is a developing concept that is being researched and refined.
 
In his initial paper, Baddeley detailed what he believes to be the biological functioning, ___location, and purpose of the episodic buffer.<ref name=":1" /> The purpose of the episodic buffer is to serve as a bridge between both Working memory and Long-Term-Memory, specifically Episodic Memory. It is believed to be more temporary in its storage capabilities, but none the lessnonetheless helps form new information and lasting memory. Since it combines several elements of memory, one could in theory say it is a distributed system.<ref>{{Cite journal|last=Baddeley|first=Alan|date=November 2000|title=The episodic buffer: a new component of working memory?|journal=Trends in Cognitive Sciences|language=en|volume=4|issue=11|pages=417–423|doi=10.1016/S1364-6613(00)01538-2|pmid=11058819|s2cid=14333234}}</ref>The limits of its abilities in storage have yet to be determined. Other issues include identifying the differences between the Episodic Buffer and Episodic Memory, as well as showing how important and essential the Episodic Buffer is to the Working Model of Memory.
 
==Long Term Memory==
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===Infants===
A surprising finding was that within the same age group of 2 to 3 months, infants could also remember an event or memory that was forgotten over the years.<ref name="Learning & memory"/> The infant experienced this recollection by a certain factor that might have sparked that forgotten memory.<ref name="Learning & memory"/> These impressive findings were found by testing the kicking of infants. Researchers placed a mobile over the infant’sinfant's crib and a ribbon that connects the infant’sinfant's leg to the mobile.<ref name="Learning & memory"/> The infants demonstrated to the researchers that they were learning the connection between their kicking and the mobile’smobile's movement.<ref name="Learning & memory"/> Once the allotted time passed, the infant’sinfant's leg was attached once more to the mobile.<ref name="Learning & memory"/> Two types of ideas were formed; supposing that the child could energetically start kicking, would lead to the assumption that the infant remembered the connection between the mobile’smobile's movement and the childs kicking. Now, if the infant’sinfant's kicking gingerly become more energetic, that would presume that the infant is relearning the connection, which would suggest that the infant has forgotten the connection made.<ref name="Learning & memory"/>
 
The study also indicated that the infant could remember the connection for up to 14 days.<ref name="Learning & memory"/> However, once certain time has passed the infant’sinfant's leg is once again connected to the mobile’smobile's movement with a ribbon to test of the infant recalled what to do.<ref name="Learning & memory"/> The infant did not remember what to do, and they were introduced to a certain factor that would aid the infant to remember.<ref name="Learning & memory"/> According to Robert & Saweikis (2004), If the experimenter moves the mobile showing the infant the movements, as soon as the infant is reconnected to the mobile with a ribbon, the infant will start kicking energetically.<ref name="Learning & memory"/> The conclusion was that the infant could indeed remember a memory, although time has passed.<ref name="Learning & memory"/>
 
Infants who are 5 months or older are able to use emotions to influence their memories. However, at this age, infants will be more likely to remember things that were characterized by positive emotions. Numerous mechanisms that are used to study and infer memory in children cannot be used on infants, due to the process the study is retrieved, which include writing or speaking.<ref name="Learning & memory"/> The way that researchers study the memory capabilities of infants in this age range is through measuring eye movements between test images presented. After doing this initial round of testing, the researchers would conduct follow-up tests both 5 minutes later and one day later. The follow-up tests shown to the infants included two geometric shapes: one from the original test, and a new shape. The researchers were able to record how long the infants looked at the images in the follow-up tests and measured how long the infants stared at each shape. The infants were more likely to gaze at the geometric shapes from the original tests if they had been paired with positive voices than if they had been paired with neutral or negative voices. This study indicated that infants at this age would be able to better remember shapes and patterns of things if they were associated with positive emotions because positivity would increase the infants' interest and attention.<ref>{{cite journal |last1=Flom |first1=Ross |last2=Janis |first2=Rebecca B. |last3=Garcia |first3=Darren J. |last4=Kirwan |first4=C. Brock |title=The effects of exposure to dynamic expressions of affect on 5-month-olds' memory |journal=Infant Behavior and Development |volume=37 |issue=4 |pages=752–9 |year=2014 |pmid=25459793 |doi=10.1016/j.infbeh.2014.09.006 }}</ref><ref>{{Cite journal|last1=Sullivan|first1=Margaret Wolan|last2=Lewis|first2=Michael|date=April 2003|title=Emotional Expressions of Young Infants and Children: A Practitionerʼs Primer|journal=Infants & Young Children|language=en|volume=16|issue=2|pages=120–142|doi=10.1097/00001163-200304000-00005|s2cid=17383258|issn=0896-3746}}</ref>
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===School Age Children===
Age differences in memory are attributed to age-correlated growth in the foundation of knowledge. What children know affects what they encode, how that information is organized in storage, and the manner in which it’sit's retrieved. The greater the background knowledge about the to-be-encoded information, the better that the information is remembered.<ref name="fivush" /> Because older children have more knowledge than younger children, older children perform better than younger children in most memory tasks. When familiarity and meaningfulness of material were equated across age, developmental differences in memory performance was no longer a factor.<ref name="swrtc.nmsu.edu"/>
 
Children’sChildren's use of memory strategies and the development of metamemory skills are also instrumental in age-related changes in memory, particularly later in childhood years.<ref>{{cite journal |last1=O’Sullivan |first1=Julia T. |last2=Howe |first2=Mark L. |title=A different view of metamemory with illustrations from children's beliefs about long-term retention |journal=European Journal of Psychology of Education |volume=13 |issue=1 |year=1998 |pages=9–28 |jstor=23420104 |doi=10.1007/BF03172810 |s2cid=143496921 }}</ref> Knowledge influences memory by affecting retrieval, by facilitating spread of activation among related items in memory and by facilitating the use of strategies. Knowledge also provides better elaboration of information which can strengthen its storage in memory.<ref name="Henry, Lucy. 2012"/>
 
=== Adults ===
Memory tends to begin to fade as when enter and go through adulthood. Ane-Victoria Idland et al.,<ref name=":0">{{Cite journal|last1=Idland|first1=Ane-Victoria|last2=Sala-Llonch|first2=Roser|last3=Watne|first3=Leiv Otto|last4=Brækhus|first4=Anne|last5=Hansson|first5=Oskar|last6=Blennow|first6=Kaj|last7=Zetterberg|first7=Henrik|last8=Sørensen|first8=Øystein|last9=Walhovd|first9=Kristine Beate|last10=Wyller|first10=Torgeir Bruun|last11=Fjell|first11=Anders Martin|date=September 2020|title=Biomarker profiling beyond amyloid and tau: cerebrospinal fluid markers, hippocampal atrophy, and memory change in cognitively unimpaired older adults|journal=Neurobiology of Aging|language=en|volume=93|pages=1–15|doi=10.1016/j.neurobiolaging.2020.04.002|pmid=32438258|s2cid=215767584|doi-access=free}}</ref> investigated the biological factors that begin to form in a person’sperson's older life and examined biological markers that could help explain the decrease in memory. They focused on beta amyloid 1–42 (Aβ42), phosphorylated tau (P-tau), total tau, chitinase-3-like protein 1 (YKL-40), fatty acid binding protein 3 (FABP3), and neurofilament light (NFL),<ref name=":0" /> and their findings suggest that tauopathy and FABP3 tended to be associated with the most memory decline. As individuals age, the hippocampus appears to begin to lose its ability to make connections to life events and memory.<ref>{{Cite journal|last1=Dahan|first1=Lionel|last2=Rampon|first2=Claire|last3=Florian|first3=Cédrick|date=August 2020|title=Age-related memory decline, dysfunction of the hippocampus and therapeutic opportunities|journal=Progress in Neuro-Psychopharmacology and Biological Psychiatry|language=en|volume=102|pages=109943|doi=10.1016/j.pnpbp.2020.109943|pmid=32298784|s2cid=215753906}}</ref>
 
==Episodic Memory==
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By school age, the typical child shows skill in recalling details of past experiences and in organizing those details into a [[narrative]] form with [[:wikt:cohesion|cohesion]]. Memories formed at this age and beyond are more likely to stand the test of time over the years and be recalled in adulthood, compared to earlier memories. Young children can sometimes retain information from specific episodes over very long periods of time, but the particular information a child of a particular age is likely to retain over different periods of time is unpredictable. This depends on the nature of the memory event and individual differences in the child such as gender, parental style of communication, and language ability.<ref name="fivush">{{cite journal |last1=Fivush |first1=Robyn |last2=Gray |first2=Jacquelyn T. |last3=Fromhoff |first3=Fayne A. |title=Two-year-old talk about the past |journal=Cognitive Development |volume=2 |issue=4 |year=1987 |pages=393–409 |doi=10.1016/S0885-2014(87)80015-1 }}</ref>
 
One of the most important aspects of episodic memory according to Tulving (1985, 1999) is the element of the individual to cognitively travel to both the past and the future.<ref name="John Wiley & Sons Ltd">{{Cite book|title=The Wiley Handbook on the Development of Children's Memory: Bauer/The Wiley|date=2013-10-07|publisher=John Wiley & Sons Ltd|isbn=978-1-118-59770-5|editor-last=Bauer|editor-first=Patricia J.|___location=Chichester, UK|language=en|doi=10.1002/9781118597705|editor-last2=Fivush|editor-first2=Robyn}}</ref> A studied yet still speculative thought about episodic memory in children is the lack of and anticipated episodic.<ref name="John Wiley & Sons Ltd"/> This suggests that children are more susceptible and successful in remembering certain events (ege.g., what are you going to have for lunch, what will you play with in the park, etc.), not because they traveled in both past and future, but that parents are the ones’ who generally organize the day, meaning they are the ones who have control over their childrenschildren's futures.<ref name="John Wiley & Sons Ltd"/>
 
As with all forms of memory, Episodic Memory is known to also decline with age. However, it can also be said that biological factors such as one’sone's sex also effects how Episodic memory develops and degrades. In a study done by Lundervold et al.,<ref>{{Cite journal|last1=Lundervold|first1=Astri J.|last2=Wollschläger|first2=Daniel|last3=Wehling|first3=Eike|date=June 2014|title=Age and sex related changes in episodic memory function in middle aged and older adults|journal=Scandinavian Journal of Psychology|language=en|volume=55|issue=3|pages=225–232|doi=10.1111/sjop.12114|pmc=4314696|pmid=24601911}}</ref> they decided to investigate the possible reasons behind this. Their findings through several longitudinal and cross-sectional studies found that as mentioned that Episodic memory does decrease with age. In regards to sex they found that women tend to have a slightly lower decrease rate of Episodic Memory than men, -.12 compared to -.14 units. They study however didn’tdidn't go into other variables such as social-economical-status in regards to how this might affect the decrease rates in age and sex.
 
==Autobiographical Memory==
The amount of information that is able to be recalled depends on the child’schild's age at the time of the event. Children at the age of 1-2 can recall personal events, though only in fragments when questioned several months later. Two-year-old children form autobiographical memories and remember them over periods of at least several months.<ref name="fivush" />
 
Difficulty in assessing memory in young children can be attributed to their level of language skills; this is because memory tests usually occur in the form of a verbal report. It is unclear whether performance on memory assessments is due to poor memory for the event or to the inability to express what they remember in words. However, memory tests assessing performance with a nonverbal photograph recognition test and behavioral re-enactment showed that children had signs of recall from 27 months, as opposed to 33 months using verbal recall testing.<ref>{{cite journal|last1=Simcock|first1=Gabrielle|last2=Hayne|first2=Harlene|year=2003|title=Age-related changes in verbal and nonverbal memory during early childhood|journal=Developmental Psychology|volume=39|issue=5|pages=805–14|doi=10.1037/0012-1649.39.5.805|pmid=12952395}}</ref>
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Childhood amnesia is a phenomenon that ranges from the age of 3–8 years of age.<ref name="ReferenceA">{{Cite book|title=Handbook of child psychology and developmental science|others=Lerner, Richard M.|date = 31 March 2015|isbn=978-1-118-95296-2|edition=Seventh|___location=Hoboken, New Jersey|oclc=888026377}}</ref> This phenomenon occurs when a child has forgotten memories and cannot recall them.<ref name="ReferenceA"/><ref name="ReferenceA"/> For instance, when a certain event is forgotten, it can be accessible in the minds storage and the time limit depending of other factors, would be over a time of month or perhaps a year.<ref name="ReferenceA"/> In amnesia it is not easily accessible.<ref>{{Citation|last=Pennington|first=Bruce F.|title=Handbook of Child Psychology and Developmental Science|chapter=Atypical Cognitive Development|date=2015-03-23|pages=1–48|publisher=John Wiley & Sons, Inc.|doi=10.1002/9781118963418.childpsy223|isbn=978-1-118-96341-8}}</ref>
 
[[Infantile amnesia]] is the tendency to have few autobiographical memories from below the age of 2-42–4. This can be attributed to lack of [[memory rehearsal]] as young children do not engage in rehearsal of remembered information. There are two theoretical explanations for why this may occur; although they take different approaches, they are not [[mutually exclusive]] of each other.<ref name="PsychBook">{{cite book|last=Robinson-Riegler; Robinson-Riegler|first=Bridget; Gregory|title=Cognitive Psychology: Applying the Science of the Mind|year=2012|publisher=Pearson Education Inc. as Allyn & Bacon|___location=75 Arlington Street, Suite 300, Boston, MA|isbn=978-0-205-17674-8|pages=272–276; 295–296; 339–346|edition=Third}}</ref> The development of a cognitive self is also thought by some to have an effect on encoding and storing early memories.<ref>[https://books.google.com/books?id=MB_PBwAAQBAJ&pg=PA218&lpg=PA218&dq=The+development+of+a+cognitive+self+is+also+thought+by+some+to+have+an+effect+on+encoding+and+storing+early+memories&source=bl&ots=sSw1xhUFaY&sig=tGznp7eKE58c--jLd1Mo0FF6lG0&hl=en&sa=X&ved=0ahUKEwit0Ij03u7LAhWCOSYKHfMUCdUQ6AEIKDAC#v=onepage&q=The%20development%20of%20a%20cognitive%20self%20is%20also%20thought%20by%20some%20to%20have%20an%20effect%20on%20encoding%20and%20storing%20early%20memories&f=false Handbook of Child Psychology and Developmental Science, Cognitive Processes]{{full citation needed|date=August 2016}}</ref><ref>{{cite journal |last1=Loftus |first1=Elizabeth F. |title=Desperately seeking memories of the first few years of childhood: The reality of early memories |journal=Journal of Experimental Psychology: General |volume=122 |issue=2 |year=1993 |pages=274–7 |doi=10.1037/0096-3445.122.2.274 |pmid=8315402}}</ref><ref>{{cite journal |last1=Usher |first1=JoNell A. |last2=Neisser |first2=Ulric |title=Childhood amnesia and the beginnings of memory for four early life events |journal=Journal of Experimental Psychology: General |volume=122 |issue=2 |year=1993 |pages=155–65 |doi=10.1037/0096-3445.122.2.155 |pmid=8315398}}</ref>
 
====Cognitive Self====
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In early adolescence, children begin to use elaborative rehearsal meaning that items are not simply kept in mind but rather are processed more deeply. They also prefer to use memory strategies such as [[categorization]] rather than simple rehearsal, looking or naming and use these strategies without needing to think about memory strategies prior to learning.<ref name="justice" />
 
Consequently, it is crucial to acknowledge that a child’schild's brain is constantly experiencing development from life adaptation.<ref name="Damon 2005 15–19">{{Cite journal|last=Damon|first=William|date=2005|title=Looking back, for a change: A story of directions in child and adolescent development|journal=New Directions for Child and Adolescent Development|volume=2005|issue=109|pages=15–19|doi=10.1002/cd.133|pmid=16342889|issn=1520-3247}}</ref> Children need to be an environment that fortifies and encourages cognitive development in the beginning.<ref>{{Cite book|last=UNCTAD-ICTSD|date=2005-04-07|title=Resource Book on TRIPS and Development|doi=10.1017/cbo9780511511363|isbn=9780521850445}}</ref> However, in proportion too literature a child’schild's mind is a remarkable mechanism that if a child has not been adequately given the optimal care and stimulation for brain development.<ref name="Damon 2005 15–19"/> A child can inverse the damage sustained in their early life and have an opportunity to develop.<ref name="Damon 2005 15–19"/>
 
==References==