Ch 9 - Defnitions Flashcards
Developmental Psychology
the branch of psychology that studies the patterns of growth and change occurring throughout life.
Nature–nurture issue
the degree to which environment and heredity influence behaviour.
nature refers to
hereditary factors
nurture referes to
environmental influences
Heredity
genetic makeup of an individual that influence growth and development throughout life.
Environment
influence of parents, siblings, family, friends, schooling, nutrition, and all other experiences to which a child is exposed.
Conception
is when a male’s sperm cell penetrates a female’s egg cell.
Chromosomes
are rod-shaped structures that contain the basic hereditary information.
Genes
the parts of the chromosomes through which genetic information is transmitted.
A Zygote
is the new cell formed by the union of an egg and sperm at the time of conception.
An Embryo
is a developed zygote that has a heart, a brain, and other organs.
A Fetus
exists from 8 weeks after conception until birth (the fetal period).
Age of viability
is the point at which a fetus can survive if born prematurely (about prenatal age of 22 weeks).
At prenatal age (28 weeks),
the fetus weighs less than 3 pounds and is about 16 inches long.
At this period, it may be capable of learning.
Preterm infants
are those who are born before week 38.
The child’s sex
determined by a particular combination of genes.
XX - female
XY - male
Critical periods
Before birth, a fetus passes through several sensitive periods, which are times during development when specific events (or stimuli) have their greatest impact.
Teratogens
are environmental agents such as a drug, chemical, virus, or other factor that produce a birth defect
Teratogens include
- Mother’s illness
- Mother’s drug use
- Alcohol use
Neonate
is a newborn child.