Chapter 3 Flashcards
(46 cards)
What is developmental psychology?
A branch of psychology that studies physical, cognitive, and social development throughout the life span.
What is a cross-sectional study?
Research that compares people of different ages at the same point in time.
What is a longitudinal study?
Research that follows and retests the same people over time.
What are chromosomes?
Threadlike structures made of DNA molecules that contain the genes.
What is DNA (deoxyribonucleic acid)?
A molecule containing the genetic information that makes up the chromosomes.
What are genes?
The biochemical units of heredity that make up the chromosomes; segments of DNA
What is heredity?
The genetic transfer of characteristics from parents to offspring
What is a genome?
The complete instructions for making an organism, consisting of all the genetic material in that organism’s chromosomes.
What is an environment?
Every external influence, from prenatal nutrition to social support in later life.
What is an interaction?
The interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)
What is epigenetics?
The study of the molecular ways by which environments can influence gene expression (without a DNA change).
What is a zygote?
The fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo
What is a embyro?
The developing organism from about 2 weeks after fertilization through the second month.
What is a fetus?
the developing human organism from 9 weeks after conception to birth.
What are teratogens?
agents, such as chemicals or viruses, that can reach the embryo or fetus during prenatal development and cause harm.
What is fetal alcohol syndrome(FAS)
physical and mental function deficits in children caused by their birth mother’s heavy drinking during pregnancy. In severe cases, symptoms include a small, out-of-proportion head and distinct facial features.
What is a reflex?
a simple, automatic response to a sensory stimulus, such as the knee-jerk response.
What is temperament?
a person’s characteristic emotional reactivity and intensity.
What are identical (monozygotic) twins?
individuals who developed from a single fertilized egg that split in two, creating two genetically identical siblings.
What are fraternal (dizygotic) twins?
individuals who developed from separate fertilized eggs. They are genetically no closer than ordinary siblings, but shared a prenatal environment.
What is maturation?
biological growth processes leading to orderly changes in behavior, mostly independent of experience.
What is a critical period?
a period early in life when exposure to certain stimuli or experiences is needed for proper development.
What is cognition?
all the mental activities associated with thinking, knowing, remembering, and communicating.
What is a schema?
a concept or framework that organizes and interprets information.