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developmental
chp 1 2 3 4 developmental psy265
67
Psychology
Undergraduate 3
09/15/2013

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Term
Genes
Definition
unit of hereditary info composed of DNA. Genes direct cell to reproduce themselves and manufacture the proteins that maintain life.
Term
DNA
Definition
a complex molecule with a double helix shape that contains genetic information.
Term
Chromosomes
Definition

threadlike structures made up of deoxyribonucleic acid, or dna.

Term
mitosis
Definition
cellular reproduction in which the cell's nucleus duplicates itself with two new cells being formed, each containing the same DNA as the parent cell arranged in the same 23 pairs of chromosomes.
Term
meosis
Definition
a specialized form of cell division that occurs to form eggs and sperm( or gametes)
Term

Genotype

Definition
a person's genetic heritage, the actual genetic material
Term
phenotype
Definition
the way an individual's genotype is expressed in observed and measurable characteristics such a weight height and hair color.
Term
Dominant recessive Genes
Definition
in some cases one gene of a pair always exerts its effects in other words it is dominant overriding the potentioal influence of the other gene which is know as the recessive .
Term
Down syndrome
Definition
a chromosmally transmitted for of intellectual disablity cause by the presence of an extra copy of chromsome 21
Term
klinrfelter syndrome
Definition
an extra x chromosome causes physical abnomralties, hormane therapy can be effective, effects 1 in 600 male births
Term
Fragile x
Definition
an abnormality in the x chromosome can cause intellectual disability learning disabilities or short attention span. language therapy and special education is usually sought.
Term
tuner syndrome
Definition
a misssing x chromosome in females  can cause intellectual disability and sexual underdevelopment. Hormone therapy in childhood and puberty is sought.
Term
XXY
Definition
An extra y chromosome can cause above average height. no treatment is required
Term
cystic fibrosis
Definition
glandur dysfuction that interferes with mucus production breathing and digestion are hampered resulting in a shortened life span
Term
diabetes
Definition
body does not reproduce enough insulin, which causes abnormal metabolism of sugar
Term
hemophilla
Definition
delayed blood  clotting causes internal and external bleeding
Term
huntington disease
Definition
central nervous system deteriorates producing problems in muscle coordnation and mental deterioration.
Term
sickle cell
Definition
metobolic disorder that limits the body's oxygen supply; it can cause joint swelling as well as heart and kidney failure
Term
phenylketonuria
Definition
metabolic disoreder that left intreated causes mental retardation
Term
spina bifda
Definition
neural tube disorder that caues brain and spine abnormalties
Term
tay sachs
Definition
deceleration of mental and physical development caused by an accumalation of lipids in the nervous system
Term

 

Polygenic Inheritance
Definition

 

Characteristics determined by interaction of several different genes
Term

 

Passive genotype-environment correlations
Definition
occur because biological parents who are gentically related to the child provide a rearing environment for the child. example the parent may read well and enjoy reading they provide their child with books and the chill will carry on the tradition.
Term

 

Evocative genotype-environment correlations
Definition
occur because a child;s characteristics elicit certain types of environments, active smiling children recieve more social stimulation than passive  quiet children.
Term

 

Active genotype-environment correlations
Definition
occur when children seek out environments that they find compatible and stumualting.
Term
G x E Interaction
Definition

 

Interaction of a specified measured variation in DNA and a specified measured aspect of the environment
Term

 

Germinal Period
Definition

 

First 2 weeks after conception

 

Formation of Zygote

 

––Formation of Blastocyst

 

Implantation

 

Term
Embryonic Period
Definition
2 – 8 weeks after conception
Embryo
Endoderm
Ectoderm
Mesoderm
Increased rate of cell differentiation
Organogenesis
Term
Fetal Period
Definition

 

2 months after conception – birth
Cell differentiation almost complete
––Fetus
Term
neural tube
Definition
forms at about 18 to 24 days after conception develops out of ectoderm
Term
neurogenesis
Definition
the production of new neurons
Term
neuronal migration
Definition
at approximately 6 to 24 weeks after conception,  cells begin moving outward form their point of origin to their appropriate locations and creating the different levels, structures and regions of the brain.
Term
teratogen
Definition
is any agent that can potentially cause a birth defect or negatively alter cognitive and behavioral outcomes.
Term
celphalocaudal
Definition
the sequence in which the earlies growth always occurs at the top-the head with physical growth in size,, weight and feature differentiation gradually working form top to bottom
Term
proximodistal pattern
Definition
the sequence in which growth starts at the center of the body and moves toward the extremities.
Term
the brain changes during infancy
Definition
at birth the brain weighs about 25% of its adult weight and by two years it is about 7% of is adult weight, however the brain's area do not mature uniformly.
Term
forebrain
Definition
the portion of the brain that is furthest from the spinal cord
Term
cerebel cortex
Definition
it covers the the forebrain like a wrinkled cap, it has two halves or hemispheres.
Term
lateralization
Definition
specialization of function in one hemisphere of the cerebral cortex of the other
Term
neuron
Definition
is a nerve cell that handles information processing
Term
axons
Definition
carries signal away from the neuron;s cell body
Term
dendrites
Definition
carry signal towards it
Term
synaptogenesis
Definition
The formation of synapses between neurons as the axons and dendrites grow.

Psychology Dictionary: http://psychologydictionary.org/synaptogenesis/#ixzz2f611kOHD
Term
pruning
Definition
eliminates weaker synaptic contacts; stronger connections are strengthened. Experience determines which connections are pruned and the ones that have been activated most frequently are preserved. Ineffective or weak connections are "pruned" in much the same way a gardener would prune a tree or bush, creating the desired shape.

Read more http://www.kgbanswers.com/what-is-the-definition-of-pruning-in-psychology-terms/20583099#ixzz2f61ocV5H
Term
infant sleep pattern
Definition
the typical newborn 16 to 17 hours a day, but there is considerable individual variation in how much infants sleep. for newborns, the range is from about 10hours to about 21 hours per day.
Term
the rooting refllex
Definition
occurs when the infant's cheek is stroked or the side of the mouth is touched. in response the infant turns its head toward the side that was touched in a apparent effort to find something to suck
Term
moro reflex
Definition
ocurs in response to a sudden intense noise or movement, the newborn arches his back throws back its head and flings out its arms and legs.
Term
the sucking reflex
Definition
occurs when newborns automatically suck an object suck an object placed in their mouth. this enables them to get nourishment before they even know what a nipple is.
Term
fantz experiment
Definition
infants preferred to look at patterns rather than at a color or brightness.
Term
piaget;s theory
Definition
ean Piaget's theory of cognitive development suggests that children move through four different stages of mental development. His theory focuses not only on understanding how children acquire knowledge, but also on understanding the nature of intelligence...
Term
schemes
Definition
in piaget's theory, actions or mental representations that organize knowledge
Term
assimilation
Definition
piagetian concept of using existing schemes to deal with new info or experiences
Term
accomodation
Definition
piagetian concep of adjusting schemes to fit new info and expereinces
Term
organization
Definition
piaget's concept of grouping isolated behaviors and thoughts into a higher order more smoothly functioning cognitive system
Term
object permanence
Definition
the piagetian term for understanding that objects and events continue to exist, even when they cannot directly be seen heard or touched
Term
emotions
Definition
a feeling or affect that occurs when a person is in a state or an interatction that is important to him or her, especially to his or her well being...
Term
purpose emotion serves for infants
Definition
1 communication with others/ 2 behavioral organization. through emotions, infants communicates important aspects of their lives such as joy, sadness, interest, and fear
Term
age emotions occur for infants
Definition
emotions that infants express in the first six months of life include surprise, inerest, joy, anger, sadness, fear, and disgust. other emotions that appear in infancy include jealousy, empathy, embarrasment, pride, shame, and guilt,; most of these occur for the first year or during second year. these later emotion have been called self conscious or other conscious or other conscious emotions because they involve the emotional reactions of others
Term
reflexive smile
Definition
A smile that does not occur in response to external stimuli. it appears during the first month after birth
Term
social smile
Definition
a smile in response to an external stimulus, which early in development, typically is a face
Term
stranger anxiety
Definition
an infant's fear and wariness of strangers that typically appears in the second half of the first year of life.
Term
anger cry
Definition
a cry similar to the basic cry, with more excess air forced through vocal cords
Term
basic cry
Definition
a rhythmic pattern usually consisting of a cry, a briefer silence, a shorter inspiratory whistle that is higher pitched than the main cry, and then a brief rest before the next cry.
Term
pain cry
Definition
a sudden outburst of loud crying without preliminary moaning, followed by breath holding
Term
seperation protest
Definition
crying when a care giver leaves...
Term
social refrencing
Definition
reading emotional cues in other to help determine how to act in a particular situation. the development of social referencing helps infants interpret ambiguous situations more accurately, as when they encounter a stranger
Term
temperament
Definition
an individual's behavorial style and characteristic way of responding emotionally
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