SUSS PSY 207 STUDY UNIT 4

Memory and problem solving: The Infant

Memory and problem solving: The Child

Uncovering Evidence of Memory

  • Several methods have been used to uncover infants’ memory capabilities including:
    • habituation
    • operant conditioning
    • object search
    • imitation techniques

Operant conditioning

  • Rovee-Collier's study involving operant conditiong of a positive reinforcement (invovling a mobile) shows that babies are able to positively ecall and engage the positive reinformcent (making the mobile jinggle).
  • her research showed that 2-month-olds can retain information for up to 2 days.

Object search

  • looking behaviour of infants from 'A-not-B' Errors is indicative of memory.
  • A-not-B errors is the tendency for Infants to search for the object in the place they last found it, and not where they most recently saw it being hidden

Habituation

  • Habituation—learning not to respond to a repeated stimulus— might be thought of as learning to be bored by familiar stimulus.
  • Newborn prefer a new stimulus to something they have to experience many times

Imitation techniques

  • infants as young as 6 months display deferred imitation, the ability to imitate a novel act after a delay, which clearly requires memory ability and represents an early form of explicit or declarative memory

Problem solving

  • Problem solving involves using our information-processing system to reach a goal or make a decision.
  • In Willat’s study, infants had to pull on a cloth in order to drag an interesting object towards them
    • 6-month-olds could not perform the task, but 9-month-olds were able to
    • By 14 months, infants recognise that adults are useful sources of information and assistance in problem solving
    • They increasingly solicit help from adults (think about Vygotsky’s zone of proximal development)

Memory Development

  • There are four major hypotheses as to why learning and memory improve

Autobiographical memories

  • refers to episodic memories of personal events.
  • Older children and adults show childhood amnesia; have few autobiographical memories from about 2 years of age and below.
  • several reasons for this loss of early memories may include:
    • Space in working memory
    • Lack of language
    • Level of sociocultural support
    • Sense of self
    • Verbatim versus gist storage
    • Neurogenesis

Problem Solving

  • Research suggests that children do not simply progress from one way of thinking to another as they age. They use multiple problem-solving strategies rather than just one.

Changes in memory strategies

  • Through experience, older children have learnt and applied more effective methods for storing information into long-term memory and retrieving it accurately when they need it.

Increased knowledge about memory

  • Older children have a better understanding of their Mental and memory capacity (Meta-cognition and metamemory); can judge how long they must study to learn something well

Changes in basic capacities

  • Advances in brain development allow for improved working memory capacity and processing speeds.

Increased knowledge about the world

  • Older children know more about the world in general and have more expertise/familiarity with things around them

Encoding of information improves over the first several years of life as the prefrontal cortex and medial temporal lobes mature.

Speed of mental processes improves with age, as neurons become myelinated. This allows older children and adults to simultaneously perform more mental operations in working memory than young

The basic capacities of the sensory register and longterm memory do not change much with age. There are, however, improvements in operating speed and efficiency of working memory, which includes improvements in the encoding and consolidation processes through which memories are processed for long-term storage

4 phases to successful memory strategy


Memory strategies used and errors inhibited

  • Perseveration errors decline by age 4
  • Perseveration error is the continued use of a strategy that was successful in the past despite the strategy’s current lack of success
  • E.g. If a favourite toy was found under the sofa previously, the child looks under the sofa again the next time the toy goes missing
  • Children increase their use of rehearsal strategy—the repeating of items they are trying to learn and remember
  • Children master organisation from around 9-10 years of age. That is, the classifying of items into meaningful groups
  • Finally, the child adopts elaboration strategy which involves actively creating meaningful links between items to be remembered.
  • Elaboration is achieved by adding something to the items, in the form of either words or images

Children then transition to production deficiency – children can use strategies they are taught but cannot produce them on their own.

The third phase is the utilisation deficiency; children can produce a
strategy, but its use does not benefit task performance (i.e.their mental capacity is fully engaged in memory and cannot actively engage in task-switching which may also be a requirement to complete certain tasks)

Initially, children experience mediation deficiency – cannot spontaneously use or benefit from strategies, even if taught how to use them

In the final stage, children can produce and benefit from using a memory
strategy

  • Meta-cognition knowledge of the human mind and of the range of cognitive processes.
  • E.g. Knowing that it is hard to pay attention when there are distracting noises in the background
  • Meta-memory Knowledge of memory and understanding how to monitor, engage and regulate memory processes.
  • metamemory is one
    aspect of metacognition.
  • E.g. Knowing one’s own memory limits, which memory strategies are more or less effective, what type of memory tasks are more or less difficult
  • During childhood, children’s knowledge base, or their knowledge content develops and expands:
    • can be accelerated through Expertise allows children to form more and larger mental chunks, which allows them to remember more.

Rule assessment approach

  • According to Siegler's rule assessment approach, children assess the given problem and information and then formulate rules to tackle problems.
  • In this perspective, children fail to solve problems because they fail to encode all the critical aspects of the problem and are guided by faulty rules.

Overlapping waves theory

  • Rather than picturing development as a series of stages resembling stair steps, Siegler argues, we should picture it as overlapping waves.
  • Children’s selection and use of problem-solving strategies become more efficient with experience.
  • They reduce the use of less-adaptive strategies, increase the use of more-adaptive strategies and New strategies may also emerge

Script or (GERs)general event representations

  • Scripts or GERs represent the typical, general sequence of actions related to an event and guide future behaviours in similar settings.
  • Constructed out of daily routine.
  • Scripts affect how children form memories of new experiences as well as how they recall past events.
  • For example, when presented with information inconsistent with their scripts, preschoolers may misremember the information so that it better fits their script

Memory and problem solving: The Adolescence and adult

Memory Strategies

  • It is during adolescence that the memory strategy of elaboration is mastered
  • In terms of problem-solving strategies:
    • Cognitive control and inhibitioni.e. able to focus on relevant information and block out task-irrelevant
      information than children.
    • Strategies are used more deliberately and selectively than in childhood.
    • Refined use of strategies i.e. Strategies relevant to school learning emerge, e.g. note-taking and highlighting key information

Basic Capacities

  • Basic capacities continue to increase; adolescents perform cognitive operations faster than children do
  • Maturational changes in the brain allow for:
    • Greater functional use of working memory
    • Enhanced cognitive processing speed.
    • Simultaneously process more chunks of information

Autobiographical Memory

  • Autobiographical memories continue to form. Recall may be influenced by 4 factors:
    • Personal significance i.e. events of great importance to the self will be remembered better than less important events.
    • Distinctiveness or uniqueness i.e. The more unique an event is, the more likely it is to be recalled later on, and to be recalled as a distinct event with relevant details.
    • Affective or emotional intensity i.e. Events associated with either highly negative or highly positive emotions are recalled better than events that were experienced in the context of more neutral emotions.
    • Adolescent life phase i.e. memories recalled from about ages 15–25 was higher than the number recalled from other points of the life span. This memory or reminiscence bump occur because memories from adolescence and early adulthood are more easily accessible because they are marked by distinctive or a series of distinctive and major life events.

Metamemory and Knowledge Base

  • Knowledge base of adolescents continues to expand
  • Metamemory and metacognition also improve and becomes refined:
    • Cognitive flexibility i.e. Can tailor reading strategies for different purposes; e.g. skimming versus studying
    • Recognise that the strategy of elaboration is more effective than rote repetition
    • Depth in understanding of cognitive ability i.e. Better able to realise when they do not understand something
    • Fairly accurate in monitoring whether they have spent enough time to learn new material

Expertise and the Adult

  • Training and experience in specific field results in domain expertise
    • Domain expertise: Reflects extreme depth in domain knowledge, better memory recall efficient processing of domain related information.
    • Process of honing domain expertise takes 10 years.

Memory and Aging

  • Decline in memory not usually noticeable until 70 years and beyond
  • Not all older adults experience these declines
  • Not all kinds of memory tasks cause difficulties in older adults.
  • While some researchers suggested that older adults learn new material more slowly and sometimes less accurately, those studies are not conclusive and are subjected to other factors including education, healthcare, etc

Specific Weaknesses and Strengths of Older Adults

Problem Solving and Ageing

Explaining Declines in Old Age

  • Older adults have difficulty with:
    • cognitively demanding tasks—that require speed
    • the learning of unfamiliar material
    • the use of unexercised abilities
    • recall rather than recognition, or explicit and effortful rather than implicit and automatic memory
  • In general semantic and procedural memory is fairly good but episodic
    memory declines steadily

Knowledge
base and Metamemory

  • The decline in memory Not caused by deficiencies in their knowledge base or metamemory;
  • older adults at least as knowledgeable as young adults. Like wise for their metamemory integrity.

Memory strategy

  • Older adults do not spontaneously use memory strategies – e.g. organisation or elaboration In general,
  • Experience problems with effective retrieval, not with the original encoding of an event

Basic processing capacities

  • Changes in basic processing capacities that occur with age are perhaps the biggest issue with memory.
  • Working-memory (WM) capacity diminishes with age, which may explain why older adults fail to use effective memory and retrieval strategies.
  • Decline in WM capacity also affects simultaneous information processing and cognitive control/inhibition (May have more trouble ignoring irrelevant task information)

Contextual Contributors

  • Ailing memory and cognitive performance are not strictly a natural phenomenon it is also dependent on the characteristics of the.
    • learner (Motivation)
    • task or situation
    • broader environment,
      including the cultural context in which a task is performed.

Selective optimization with compensation (SOC)

  • This framework illustrates how older adults cope with diminishing cognitive capacities.
    • Selection i.e. focus on a limited set of goals and the skills most needed to achieve them.
    • Optimization i.e. practice those skills to keep them sharp.
    • Compensation i.e. develop ways around the need for other skills
  • Problem-solving skills for “real-life” rather than artificial, abstract problems improve from young adulthood to middle-age
  • Elderly adults can sometimes do better and sometimes do worse than younger adults but show smaller deficits in real-life tasks than in artificial tasks
  • Expertise in everyday problem-solving gained through experience explains this pattern of results