Developmental Psychology Flashcards
What is development
Development is widely recognised as a lifelong process that extends into late adulthood
Take a lifespan view and cover all areas of human development, from prenatal development to death
Developmental stages:
- Prenatal development
- Early & middle childhood
- Adolescence
- Adulthood
Domains of Development:
- Physical
- Cognitive
- Socio-emotional
o All development is interrelated and interactive
Physical development
- Prenatal
- Neonatal
- Pre-school
- Middle- childhood
Includes physiological changes and motor development
Physical development Prenatal period
Germinal
Embryonic
Foetal
Physical development
Neonatal period
Vision
Hearing
Taste & smell
Physical development Preschool period
- Cephalocaudal Developmental Trend
- Proximodistal Developmental Trend
- Body proportions change
Physical Middle- childhood period
Physical growth slows down
Brain : growth
spurt (frontal)
prenatal period
progress before birth
- Science & society continue to consider the roles of genetics, environmental & parental (particularly maternal) factors on child development
- As a result – the debate about the relative importance of biological & environmental factors is ongoing
- From conception to birth = 9 months of pregnancy
- A great deal of important development occurs before birth
prenatal period
Stage 1 – germinal stage (0-2 weeks)
- Last from conception to about 2 weeks
- Conception = moment when the sperm cell
fertilises the ovum (egg cell), zygote is formed - Rapid cell division occurs & the mass of cells
migrates to the uterus - Implants into the uterine wall, forms a
placenta during the implantation process
prenatal period
Stage 2 – embryonic stage (2-8 weeks)
- From the end of the 2nd week until the 8th week
- Development of the placenta and the umbilical cord
- Most of the vital organs and bodily systems such as the heart,
spine and brain emerge - Time of great vulnerability
- Embryo is contained in a sac within the mother’s uterus and is surrounded by
amniotic fluid, which cushions & protects the embryo
prenatal period
Stage 3 – foetal stage (8 Weeks – birth)
Lasts from 8 weeks to birth
* During the early parts of this stage, the muscles and bones begin to form
- Sex organs develop in the third month and brain cells multiply during the final three months
- By about 26 weeks, the zone of viability is reached – when the baby could survive if born prematurely (NB)
- At 22/23 weeks – the chances of survival are slim
- By 26-28 weeks – the chances improve to a survival rate of about 85%
Factors influencing on prenatal development
- Maternal nutrition
- Maternal stress & emotion
-Stresshormones (epinephrine,
no repinephrine, adreno- corticotropic hormone)
-Effect of blood pressure ,
immune system - Maternal drug use
Alcohol
Smoking –smaller, low birthweight, higher
risk of miscarriage
-Other substances
-Prescription & over-the counter
drugs - Maternal Illness & Psychopathology
-Many illnesses pose high risk for
damaging brain
development -
lead to intellectual & other disorders
-Rubella, Suphilis, HIV - Genetic disorders
-Gene abnormalities
-Chromosome abnormalities - Culture, family, environmental toxins
-Culture influences thoughts &
decision around
pregnancy & child-rearing
-Miscarriages oChangesin
family structure
over time
-Environmental
toxins: air
pollution, radioactivity
Physical development Neonatal period
- Spans approximately the first 2-4 weeks after birth
- Transition from relatively safe environment of its mother’s uterus to an environment where it must now breathe & feed
on it’s own - The newborn baby (neonate) is much more competent than was previously thought
- Display more than 20 reflexes over which they initially have no control o Involuntary responses to specific stimuli
o Important for the newborn’s survival
▪ Rooting
▪ Sucking
▪ Swallowing for feeding - The absence of reflexes may be an early indication of neurological problems
Perceptual development
Neonates are able to take in information from their environment via their
1. Taste & smell
* Well-developed sense of smell
* Can distinguish between different
smells
* Their sense of taste is also well
developed
* Strong preference for sweet as opposed to sour
2. Hearing
* Can distinguish human speech from other sound
* Can distinguish between human speech sounds
* A preference for their mother’s voice
*Baby talk directed towards them
3. Vision
* Present at birth
* Certain parts of the eye & visual cortex are not fully developed, nor is the
ability to coordinate the movement of eyes
* Cannot focus properly – blurry vision
* Neonates actively scan their surroundings
* Can see objects about 21 cm away
* Distinct preference for looking at faces, patterns rather than plain stimuli &
patterns with sharp contrasts
Physical development Preschool period
- Characterised by rapid growth during the first 2 years of life, slower pattern of growth between the ages of 2 & 6 years
- Growth follows the cephalocaudal developmental trend & the proximodistal developmental trend
Cephalocaudal Development Trend (top-down)
- From the head downward
- Trunk grows fastest during the 1st year – gain control over
muscles of the head and neck, then the arms and abdomen
& finally the legs - By 4 – 6 months – birth weight has often doubled – by end year one, birth
weight has tripled - Body proportions also change
o At2years–theheadisabout1⁄4oftotalbodysize;by51⁄2yearsitis1/6th - The brain increases from being 25% if its eventual adult weight at birth to
being about 50% at the age of one year - The brain & nervous system develop increasingly dense neural networks
- Ability to acquire new information increases
o Genetics & the environment influence the growth - Malnutrition may stunt brain growth & cognitive development
- Very physically active – engaging in activities such as running, walking,
hopping, jumping, skipping & climbing - Children improve both gross motor skills & fine motor skills
o Gross motor skills – capabilities involving large body movements such as walking, running & hopping
o Fine motor skills - capabilities involving small body movements such as handling a spoon & writing
Proximodistal developmental trend
o From the centre outward
o Gross motor skills develop faster than fine motor skills during this
period
* Preference for right or left hand begins to show at about two years
* Develops slowly – only established at about age 5 to 6
* Environmental factors can stunt or delay normal development
o Sustained periods of malnutrition are associated with stunted physical growth, reduced activity levels & delays in maturation & learning
Physical development Middle childhood ( 6 – puberty )
- Slower average growth rate
- Increase in strength, coordination & muscular control, leads to improved
gross motor & fine motor skills - An improvement in motor-perceptual functioning ( hand-eye coordination )
- 3 main environmental influences on physical growth & development : the
quality care, nutrition & illnesses - Brain continues to grow in both structure and function
- Between five & seven years, the brain experiences a growth spurt,
particularly in the frontal lobes & their connections to other parts of the brain o Frontal lobe development is important for planning and for the
sequential organisation of thoughts & actions
Physical Adolescence
- Puberty is the stage during which sexual functions reach maturity, marking the beginning of adolescence.
o It is during puberty that the primary sex characteristics, the structures necessary for reproduction, develop fully. - In females, the onset of puberty is signalled by menarche – the first occurrence of menstruation.
- In males, it is signalled by sperm production.
- At this time, males begin to show acne, facial and body hair, voice change,
muscle development and the ability to ejaculate. - Females also develop acne, as well as body hair, breast development,
rounded contours, as well as menstruation. - Psychological consequences of body changes largely influenced by gender.
- Eating disorders most often begin in adolescence.
- Body changes in adolescence for transgender adolescents may be
challenging as well and associated with body image, eating problems,
and psychological challenges. - Social pressures play a big role.
Physical Early adulthood
- Prime of life: physical peak
- Problem free overall health
- First signs of aging from late 20’s onwards
- SA Health risks: young adults are at risk both from violence and from
disease. - In this age group, individuals are amongst those most at risk of death or
injury through almost all forms of violence, including violent assault and suicide, and motor vehicle collisions
Physical Middle adulthood
- Spans from age 40-60 (Dependent on life expectancy of a country’s population)
- Perceptible decline in physical attributes and functioning. Decrease in muscle size, increased body fat retention and decline in dexterity
- Decline in visual capacities from about age 40
- Women reach menopause and males experience a decline in sexual
responsiveness - Good diet and regular exercise can slow down aging process
- Health Risks: During middle adulthood, the individual becomes increasingly
susceptible to the risk of various ailments, such as cardiovascular diseases (which include cardiac disorders, arteriosclerosis and hypertension), various forms of cancer, arthritis and respiratory diseases.
Physical Late adulthood/old age
- Traditionally use age 60 as marker for onset of late adulthood
- The commencement of late adulthood coincides with senescence – the
increasing decline of all the body’s systems, including the cardiovascular,
respiratory, endocrine and immune systems - The belief that old age is always associated with profound intellectual and
physical infirmity is a myth.
o The majority of older people retain most of their physical and cognitive
abilities. - Increased susceptibility to illness during this stage of development is largely
a result of the progressive degeneration of the body. - In South Africa, however, many older people who have experienced a lifetime
of poor diet, arduous physical labour, multiple pregnancies and inadequate reproductive health care have an even greater susceptibility to ill health
Cognitive development
- Refers to the age-related changes that occur in mental activities such as paying attention, perceiving, learning, thinking & remembering
- The transition in children’s pattern of thinking, including:
o Reasoning
o Remembering
o Problem solving