WEEK 5 Flashcards
Early Childhood (45 cards)
Describe the physical growth and change that takes place during early childhood
-From age 3 to 5, the typical child grows about 7 cm per year and gains about 2 kg.
-Height and weight are usually measured in percentiles. A score that falls at a particular percentile means that that percentage of scores fall below it; therefore, a child whose weight is at the 20th percentile weighs more than 20%—and less than 80%—of children of the same age.
-Three-year-old boys at the 50th percentile are 96 cm tall and weigh 14.5 kg, and at age 5 are 110 cm and 18.5 kg.
-Three-year-old girls at the 50th percentile are 96 cm tall and weigh 14 kg, and at age 5 are 108 cm and 18 kg
-Both boys and girls gain more in weight than in height during early childhood, but most add more muscle than fat. From toddlerhood to early childhood, most children lose their remaining ‘baby fat’ and their bodily proportions become similar to those of adults.
Early childhood dental development…
-By their third birthday, most children have a full set of 20 teeth
-These are their primary or ‘baby’ teeth that will be replaced by 32 permanent teeth in the course of childhood, beginning at about age 6. However, this replacement process , lasts until about age 14, so children use their baby teeth for up to 10 years and have to learn how to take care of them to prevent tooth decay.
-In developed countries, children usually have their first visit to the dentist around age 3.
-Overall, children in most developing countries have more tooth decay in early and middle childhood than children in developed countries do
Brain development in early childhood…
-The size of the brain continues to increase gradually during early childhood
-At age 3, the brain is about 70% of its adult weight, and at age 6, about 90%. In contrast, the average 6-year-old’s body weight is less than 30% of what it will be in adulthood, so the growth of the brain outpaces the rest of the body.
-The frontal lobes grow faster than the rest of the cerebral cortex, underlying the advances in emotional regulation, foresight and planned behaviour that take place during the preschool years
-During early childhood, the number of neurons continues the decline that began in toddlerhood via synaptic pruning.
-The increase in brain size and weight during early childhood is due to an increase in dendritic connections between neurons and to myelination.
In which brain structures is myelination complete by age 5?
-Corpus callosum: Connects L+R hemispheres of the brain
-Cerebellum: Controls balance and motor movement
-Hippocampus: Involves transfer of information from short to long term memory
-Reticular formation: controls attention
Role of myelination in Corpus Callosum…
increased myelination of this area of the brain enhances the speed of functioning throughout the cerebral cortex.
Role of myelination in Cerebellum…
Increased myelination enhances connections between the cerebellum and the cerebral cortex. This change underlies the child’s increasing abilities to jump, run, climb and throw a ball.
Role of myelination in the Hippocampus…
The hippocampus is involved in the transfer of information from short-term to long-term memory, so the completion of myelination by age 5 may explain why autobiographical memory (memory for personal events and experiences) is limited prior to this age
Role of myelination in the Reticular Formation..
myelination is completed by age 5, which helps explain the increase in attention span that takes place in the course of early childhood.
For example, by age 4 or 5, most children could easily sit for 10–15 minutes at preschool or kindergarten while a story is read aloud, whereas most toddlers would be unable to sit still and pay attention for so long
Infantile amnesia…
The inability to remember anything prior to age 2
- One theory proposes that autobiographical memory before age 2 is limited because the awareness of self becomes stable at about 2 years of age and serves as a new organiser around which events can be encoded, stored and retrieved in memory as personal; that is, as having happened ‘to me’
-Another perspective proposes that the encoding of memories is promoted by language development because language allows us to tell ourselves a narrative of events and experiences; consequently, most autobiographical memory is encoded only after language development accelerates at age 2
Describe changes in gross and fine motor abilities during early childhood, compared with toddlerhood…
-gross motor development in early childhood tends to extend abilities that first appeared in toddlerhood
-Toddlers can hop a step or two with both feet, but from age 3 to 6 young children learn to make more hops in a row and to hop on one foot.
-Toddlers can jump, but from age 3 to 6 children learn to jump further from a standing position and to make a running jump.
-Toddlers begin to climb stairs, but from age 3 to 6 children learn to climb stairs without support, alternating their feet.
-Toddlers can throw a ball, but from age 3 to 6 children learn to throw a ball further and more accurately, and they become better at catching it, too.
-they also increase their running speed and their ability to stop suddenly or change direction.
New gross/fine motor skills developed in early childhood…
-As toddlers they could already pick up a small object using two fingers, but now they learn to do it more quickly and precisely.
They could already hold a crayon and scribble on a piece of paper, but in early childhood, they learn to draw something that is recognisable to others, such as a person, animal or building
-New fine motor skills learned in early childhood include putting on and removing their clothes, using scissors and using a knife to cut soft food
Describe the development of handedness and identify the consequences and cultural views of left-handedness…
-even prenatally, fetuses show a definite preference for sucking the thumb of their right or left hand, with 90% preferring the right thumb. The same 90% proportion of right-handers continues into childhood and throughout adulthood in most cultures
- Adopted children are more likely to resemble their biological parents than their adoptive parents in their handedness, suggesting a genetic origin
-identical twins are more likely than ordinary siblings to differ in handedness, even though identical twins share 100% of their genotype and other siblings only about 50%. This appears to be due to the fact that twins usually lie in opposite ways within the uterus, whereas most singletons lie towards the left
-In Africa, even today, using the left hand is suppressed in many cultures from childhood onwards, and the prevalence of left-handedness in some African countries is as low as 1%, far lower than the 10% figure in cultures where left-handedness is tolerated
-In early and middle childhood, left-handers are more likely to have problems learning to read and to have other verbal learning disabilities This may have something to do with the fact that about one-quarter of left-handers process language in both hemispheres rather than primarily in the left hemisphere.
Explain the features of Piaget’s preoperational stage of cognitive development…
-In Piaget’s theory, early childhood is a crucial turning point in children’s cognitive development because this is when thinking becomes representational
2-7 years old
‘Conservation’…
-the principle that the amount of a physical substance remains the same even if its physical appearance changes
-In his best known demonstration of this mistake, Piaget showed young children two identical glasses holding equal amounts of water and asked them if the two amounts of water were equal.
The children typically answered ‘yes’—they were capable of understanding that much. Then Piaget poured the contents from one of the glasses into a taller, thinner glass, and asked the children again if the two amounts of water were equal.
Now most of the children answered ‘no’, failing to understand that the amount of water remained the same even though the appearance of the water changed.
Piaget’s two types of cognitive deficiencies…
-Centration: meaning that young children’s thinking is centred, or focused, on one noticeable aspect of a cognitive problem to the exclusion of other important aspects. In the conservation-of-liquid task, they notice the change in height as the water is poured into the taller glass but neglect to observe the change in width that takes place simultaneously.
- (Lack of) Reversibility- the ability to reverse an action mentally. When the water is poured from the original glass to the taller glass in the conservation task, anyone who can reverse that action mentally can see that the amount of water would be the same. Young children cannot perform the mental operation of reversibility, so they mistakenly believe the amount of water has changed.
Animism…
the tendency to attribute human thoughts and feelings to inanimate objects and forces.
Explain what ‘theory of mind’ is and the evidence for how it develops during early childhood…
Perspective-taking ability advances considerably from age 3 to 6, as demonstrated by performance on false-belief tasks.
‘Theory of Mind’…
the ability to understand thinking processes in one’s self and others.
Identify the ways that cultural learning takes place in early childhood…
-A great deal of cultural learning takes place in early childhood through observing and working alongside parents or siblings, and in many cultures children begin to make important work contributions to the family during this stage.
-In developed countries, children also gain cultural learning in the preschool setting.
Explain how advances in vocabulary and grammar occur in early childhood.
Children’s vocabularies expand immensely in early childhood, from about 1000 words at age 3 to about 2500 words at age 6, and they readily grasp the grammatical rules of their culture with few errors by age 4.
Describe how children learn pragmatics in early childhood and identify to what extent these social rules are culturally based…
Pragmatics guide us in knowing what to say—and what not to say—in a given social situation. By age 4, children are sensitive to the characteristics of their conversational partner and will adjust their speech accordingly. All cultures have their own rules for what kinds of speech can be used in what kinds of situations.
Which part of the brain is influential in the decrease in temper tantrums in early childhood?
the development of the frontal cortex promotes this process because this is the part of the brain most involved in emotional self-regulation
Changes to empathy in early childhood…
-Children become better at perspective taking, and being able to understand how others think and feel makes them more empathic.
- Empathy promotes prosocial behaviour such as being generous or helpful. It contributes to the moral understanding of principles such as avoiding harm and being fair because, through empathy, children understand how their behaviour would make another person feel.
-As empathy increases, prosocial behaviour increases over the course of early childhood
Moral development in early childhood…
-advances further as children gain a more detailed and complex understanding of the rules and expectations of their culture
-Toddlers know when others approve or disapprove of something they have done, and they usually respond with the appropriate sociomoral emotion. However, in early childhood there is greater awareness of the rule or expectation that evoked the approval or disapproval.
-young children are more capable than toddlers of anticipating the potential consequences of their actions and avoiding behaviours that would be morally disapproved