What is developmental psychology?
It is the study of continuity and change across life spans. It includes the study of infancy, childhood, adolescence, and adulthood. We are always changing and in recent years scientists have begun to understand the importance of understanding the biology behind these processes.
What is prenatal development?
It is the development that occurs before the baby is born. It is broken into three stages.
What is the first stage of prenatal development?
The Germinal Stage. This is the period from conception to two weeks after. The egg is referred to as a Zygote.
What is the second stage in prenatal development?
The Embryonic stage. This period starts at the 2nd week and lasts to the 8th week. During this time, the zygote travels down the Fallopian tubes and is implanted in the uterine lining.
What is the third stage in prenatal development?
The fetal stage. This period lasts from the 9th week until birth. This is when myelination (the formation of a fatty sheath around the axons of a neuron) is formed and it allows the nervous system to work much better. It increases neurotransmission.
What is the significance of the prenatal environment?
A lot of important development occurs in the womb and the fetus is quite vulnerable at this time. If the mother consumes or is exposed to harmful substances, these can pass through the placenta and impact the baby’s development.
What is the placenta?
The placenta is an organ that links the bloodstreams of the mother to the fetus and permits exchange of substances.
What is a teratogen?
It is any substance that passes from mother to unborn child and impairs development.
What are some factors that influence the severity of teratogens’ influences?
What is FASD?
Fetal Alcohol Spectrum Disorder is a developmental disorder that occurs from alcohol use while pregnant. There is a high risk if mother binge drinks. (More than 7 drinks a week.) Baby will experience physical, cognitive, behavioural, and neurological changes.
Infancy
This stage begins at birth and lasts between 18-24 months. At this time, newborns have poor sight but habituate to visual stim. There has been an increase in the study of newborns and they’ve discovered that newborns can mimic faces in the first hour.
What is habituation?
The tendency for an organism to respond less intensely to a stimulus each time it is presented.
What are motor reflexes?
Motor responses that are triggered by specific patterns of sensory stimulation. Infants are born with a small set of these. For example, they are born with the rooting and sucking reflex. (Helps with nursing.)
What is motor development?
The emergence of the ability to execute physical actions.
What is the Cephalocaudal principle?
It is the “top-to-bottom” principle that describes the tendency for motor skills to emerge in sequence from the head to the feet.
What is the Proximodistal principle?
The “inside to outside” principle that describes the tendency for motor skills to emerge in sequence from the centre to the periphery.
What is cognitive development? And what did Piaget suggest about it?
The process by which infants and children gain the ability to think and understand. Piaget suggested that infants learn how the physical world works, how their minds represent it, and how other peoples’ minds represent it.
What is a schema?
Theories about the way the world works.
Sensorimotor stage and its characteristics.
Infants experience the world by sensing it and moving in it. They develop schemas and begin to act intentionally and shows evidence of understanding “object permanence”.
What is assimilation?
The process by which infants apply schema in novel situations.
What is accommodation?
The process of revising schema in light of new information.
What is object permanence?
The idea that objects continue to exist, even when they are not visible. When infants form this, it is a sign that they have formed mental visualisation. This is evidence for logical thought occurring. When it occurs, child makes mental representations to make predictions and sense of the world.
Preoperational stage and its characteristics.
This stage includes children aged 2-6 years old. They acquire motor skills but do not understand “conservation.” The child begins this stage with thinking egocentrically but ends with a basic understanding of others’ minds.
Concrete operational stage and its characteristics.
This stage includes children 6-11. They can now think logically about physical objects and events and understand “conservation.”