Unit 6: Development Flashcards
Genotype
Genetic characteristics
Phenotype
Physical characteristics
Phenylketonuria (PKU)
Inability to produce enzymes to digest proteins. Inherited disorder; autosomal recessive (similar to Tay-Sachs, sickle cell cystic fibrosis). Has neurological impairment
Down Syndrome / Trisomy 21
Not usually inherited, usually caused by gene copying error. Has physical growth delays and intellectual disabilities
Germinal Stage
Zygote stage 0-2 weeks. Undergoes rapid cell division. XX or XY determined by father. Least vulnerable to environmental influences
Zygote
Fertilized egg
Placenta
Whatever the mother breathes, eats, or drinks may impact the course of development
Embryonic Stage
3-8 weeks. Embryo is provided nourishment and oxygen by the placenta. Organs begin forming, heart begins to beat, central nervous system begins to develop - neural tube closes
Fetus Stage
9-38 weeks. Sex organs differentiate, toes and fingers grow, hearing develops, lungs develop, being has rapid growth, bones and muscles develop
Teratogens
Any environmental agent that can reach the embryo or fetus during prenatal development and cause harm
Fetal Alcohol Syndrome
Epigenetic effect. AKA leaves chemical marks on DNA that switch genes abnormally
Habituation
A decrease in responding with repeated stimulation
Brain Development
Maturation - biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience
Motor Development (Physical Coordination)
Genes guide motor development - identical twins typically begin walking on the same day
Cognition
All the mental activities associated with thinking, knowing, remembering, and communicating
Schema
A concept of framework that organizes and interprets information. Mental representation of what we know
Assimilation
Interpreting our new experiences in terms of our existing schemas. Using a schema (representation of what we know) to interpret a stimulus - EX a child sees a cat, calls it a dog because it has 4 legs
Accomodation
Adapting our current understanding (schemas) to incorporate new information. Altering schemas (representations of what we know) to incorporate new information - EX cats meow, dogs bark, they’re different animals
Piaget Stages - Sensorimotor
Birth-2 years. Uses senses and motor skills, items are known by use, object permanence. They take in the world through their senses and actions
Object Permanence
The awareness that things continue to exist when not perceived
A-not-B test (Preservative Error)
An error in the mental perception of objects seen in infants before the age of 1. By the time an infant is around 8mo, they can realize that objects that are hidden still exist, and have not disappeared
Piaget Stage - Preoperational / Symbolic
2-7 years. Symbolic thinking, languaged used; egocentric thinking, imagination/experience grow, child de-centers. Objects & ideas have singular meaning. Pretend symbolic play - objects ‘stand in’ for other objects
Conservation
The principle that properties such as mass, volume, and number remain the same despite changes in the forms of objects
Theory of Mind
People’s ideas about their own and other’s mental states. Leads to empathy - child can infer the emotional state of a friend who is injured on the playground or left out of a game
Egocentrism
Inability to see another’s point of view
Piaget Stage - Concrete Operational
7-11 years.
Logic applied, objective/rational interpretations; conservation, numbers, ideas, classifications. Gain mental operations that enable them to think logically about concrete events. Begins comprehending math transformations and stronger sense of conservations
Logical thinking ~age 12, begins to think logically about abstract concepts
Reversibility
Numbers or objects can be changed and returned to their original condition
Classificaiton
Ability to group objects based on multiple properties
Serialion
Arranging objects in order based on a specific classification