Toddlerhood Flashcards
Stunting
Starting around 6 months of age, when they begin eating solid food as a larger part of their diet, children are at risk of stunting, which is when poor nutrition affects height, physical growth and cognitive potential. According to the WHO about 53% of children in Asia and 41% in Africa may be at risk of stunting.
By the time they reach their first birthday, the height and weight of average children in developing countries are comparable to the bottom 5% of children in developed countries, and this pattern continues through childhood into adulthood.
Kwashiorkor
Protein deficiency leads to a range of symptoms such as lethargy, skin lesions and thinning hair.
Often the body swells with water, especially the belly. Toddlers with kwashiorkor often have diets high in rice, but not enough protein. Kwashiorkor lowers the effectiveness of the immune system, making toddlers more vulnerable to disease, and over time can lead to coma followed by death.
Micronutrients
Dietary ingredients essential to optimal physical growth including iodine, iron, zinc, vitamins A, B12, C, and D.
In young children, a lack of iodine inhibits cognitive development, resulting in an estimated IQ deficiency of 10–15 points.
Synaptic density
The number of synaptic connections among neurons. These connections multiply immensely in the first 3 years, and toddlerhood is when peak production of new synapses is reached in the frontal lobes (age three). Greater density than adults.
During toddlerhood, new synapses in the frontal cortex are produced at a rate of 2 million per second, reaching a total by age 2 of more than 100 trillion synapses.
The brain has only about one half as many neurons at age 2 as it did at birth.
EEG (electroencephalogram)
Measures the electrical activity on the cerebral cortex, allowing researchers to measure overall activity on the cerebral cortex as well as activation of specific parts.
Sharp increase in overall cortical activity from 18 to 24 months.
fMRI (functional magnetic resonance imaging)
Requires a person to lie still inside a machine that uses a magnetic field to record changes in blood flow and oxygen use in the brain in response to different kinds of stimulation, such as music. Unlike the EEG, an fMRI can detect activity in any part of the brain, not just the cerebral cortex.
One study found that toddlers showed greater frontal lobe activity in response to speech than the older children did, reflecting the brain’s readiness for rapid language acquisition during the toddler period.
Synaptic pruning
The connections between neurons become fewer but more efficient, with the synapses that are used becoming more developed, while unused synapses wither away. Synaptic pruning will remove about one-third of synapses in the frontal cortex from early childhood to adolescence.
Changes in sleep
Sleep declines from 16 to 18 hours a day in the neonate to about 15 hours a day by the first birthday, and further to about 12–13 hours by the second birthday.
The toddler not only sleeps less than the infant, but also has more of a night-sleeping, day-waking arousal schedule. Most toddlers take only one nap during the day by the time they reach 18 months old, compared to the two or more naps a day typical of infants.
May return to sleeping difficulties when the molars come through.
Physical milestones for toddlers
8 to 12 months:
-Raise self to sitting position
-Sit without support for longer periods
-Stand by them self and pull themself up, take side steps, able to walk if hands are held
-Move objects from one hand to another, stretch out to pick up toys
-Wriggle and crawl to move about
12 months to 2 years:
-Take a few steps without support
-Squat to pick up objects
-Drink from a cup and use utensils, can feed with hands
-Turn pages and hold a pencil
-Roll a ball
2 to 3 years:
-Easily walk, run, climb and jump
-Squat without using hands to rise up
-Easily feed self with utensils and drink from cup
-Dress themself with help
-Use a pencil to draw
Fine motor skill milestones for toddlers
7–15:
Hold writing instrument (e.g., pencil, crayon)
8–16:
Coordinate actions of both hands
10–19:
Build tower of two blocks
10–21:
Scribble vigorously
12–18:
Feed self with spoon
15–23:
Build tower of 3–4 blocks
20–28:
Draw straight line on paper
24–32:
Brush teeth
26–34:
Build tower of 8–10 blocks
29–37:
Copy circle
Toilet training
Most toddlers show signs of readiness from about 24 months of age. Some key signs are:
-starting to do things independently
-knowing they are dry or dirty and letting their caregiver know
-increased anticipation of the event, expressed through looks or words
-directly asking to use the toilet or to wear underwear instead of a nappy.
Typically it is a process that continues over several weeks, months or even years. The earlier toilet training begins, the longer it takes to complete it.
At age 5 or 6, around 85–90% of children are able to control their bladder at night. 25% have accidents at night occasionally before 7.
In traditional cultures, toddlers usually learn controlled elimination through observing and imitating older children.
Weaning
Breastfeeding for 2–3 years has been the most typical human custom, until recently.
The National Health and Medical Research Council recommends that babies are exclusively breastfed until 6 months, at which point solids can be introduced.
In Bali, mothers use bitter herb to deter toddlers after 2 years that do not wean.
Tomato paste is used in Turkey.
Fulani people of West Africa send toddlers to the grandparents while weaning. Grandmother may offer her breast but will deter toddler from asking again.
Piaget’s sensorimotor stage 5
Piaget called the fifth stage of sensorimotor development tertiary circular reactions (age 12–18 months). In this stage, toddlers intentionally try out different behaviours to see what the effects will be. In the previous stage, secondary circular reactions, the action first occurs by accident and then is intentionally repeated; however, in tertiary circular reactions the action is intentional from the beginning. Like secondary circular reaction, tertiary circular reactions are circular because they are performed repeatedly.
Piaget’s sensorimotor stage 6
The final stage of sensorimotor development, from 18 to 24 months, is the stage of mental representations. Now, instead of trying out a range of actions as in tertiary circular reactions, toddlers first think about the possibilities and select the action most likely to achieve the desired outcome.
Mental representation is a crucial milestone in cognitive development because it is the basis of the most important and most distinctly human cognitive abilities, including language. The words we use are mental representations of objects, people, actions and ideas.
Object permanence in toddlerhood
Object permanence also develops further during toddlerhood. By their first birthday, infants will look for an object that they observe being hidden behind or under another object. However, even at 12 months they still make the ‘A-not-B error’. That is, if they find an object under blanket A, and then a second blanket—B—is added and they observe the object being hidden under blanket B, they nevertheless tend to look under blanket A, where they found the object the first time.
Toddlers learn to avoid the A-not-B error and search for the object where they last saw it hidden. However, even though the A-not-B error is less common in toddlerhood than in infancy, search errors happen occasionally on this task in toddlerhood and even into early childhood, up to ages 4 and 5.
Deferred imitation
The ability to repeat actions observed at an earlier time.
Piaget proposed that deferred imitation begins at about 18 months, but subsequent research has shown that it develops much earlier than he had thought (6 weeks for facial expressions and 6 months for simple actions). Toddlers are more proficient when there is an extended delay of more than a day (1 month in study).
May be explained by the more developed hippocampus in toddlerhood.
Categorisation
Piaget also believed that mental representation in toddlerhood is the basis of categorisation.
Piaget underestimated infants and studies have found that even infants as young as a few months old have been shown to have a rudimentary understanding of categories.
However, research has generally confirmed Piaget’s insight that categorisation becomes more advanced during toddlerhood. 2 year olds able to categorise based on more advanced features such as function.
Lev Vygotsky
This approach is founded on the ideas of the Russian psychologist Lev Vygotsky (1896–1934). Vygotsky died of tuberculosis when he was just 37, and it took decades before his ideas about cognitive development were translated and recognised by scholars outside Russia. It is only in recent decades that his work has been widely influential among Western scholars, but his influence is increasing as interest in understanding the cultural basis of development continues to grow.
Vygotsky’s sociocultural theory
It is social because children learn through interactions with others and require assistance from others in order to learn what they need to know.
It is cultural because what children need to know is determined by the culture they live in.
Each language reflects the concepts relevant to the everyday practices of the people who use the language. This is very different from Piaget’s theory described earlier, which emphasises the child’s solitary interactions with the physical environment and views cognitive development as essentially the same across cultures.
The zone of proximal development
The zone of proximal development is the distance between skills or tasks that children can accomplish alone and those they are capable of performing if guided by an adult or a more competent peer.
According to Vygotsky, children learn best if the instruction they are provided is within the zone of proximal development, so that they need assistance at first but gradually become capable of performing the task on their own.
Private speech
As they learn in the zone of proximal development and have conversations with those guiding them, children begin to speak to themselves in a self-guiding and self-directing way, first aloud and then internally.
Scaffolding
The degree of assistance provided to children in the zone of proximal development.
According to Vygotsky, when children begin learning a task, they require substantial instruction and involvement from an adult or more capable peer; but as they gain knowledge and skill, the teacher should gradually scale back the amount of direct instruction provided.
Barbara Rogoff’s Guided participation
The interaction between two people (often an adult and a child) as they participate in a culturally valued activity. The guidance is ‘the direction offered by cultural and social values, as well as social partners’ as learning takes place. The teaching in guided participation may also be indirect and is ideal for toddlers to begin to learn the foundations of science.
Linguist Derrick Bickerton
‘Only language could have broken through the prison of immediate experience in which every other creature is locked, releasing us into infinite freedoms of space and time’.
Using language, humans can communicate about not just what is observable in the present, the way other animals might communicate about food or predators in their immediate environment, but about an infinite range of things beyond the present moment. With language, we can also communicate not just about things that exist, but also about things that might exist, things that we imagine.