Human Development Flashcards
human development
the study of change and continuity in the individual across the life span.
germinal stage
the first prenatal stage of development, which begins at conception and lasts two weeks.
zygote
single cell that results when a sperm fertilizes an egg.
embryo
the term for the developing organism from 2 weeks until about 8 weeks after conception.
embryonic stage
the second prenatal stage, from 2 weeks to 8 weeks after conception, when all of the major organs form.
fetal stage
the third prenatal stage, which begins with the formation of bone cells 8 weeks after conception and ends at birth.
neural migration
the movement of neurons from one part of the fetal brain to their more permanent destination; occurs during months 3–5 of the fetal stage.
prenatal programming
he process by which events in the womb alter the development of physical and psychological health.
teratogens
substances that can disrupt normal prenatal development and cause lifelong deficits.
fetal alcohol spectrum disorder
a consequence of prenatal alcohol exposure that causes multiple problems, notably brain damage.
temperament
the biologically based tendency to behave in particular ways from very early in life.
personality
the unique and relatively enduring set of behaviors, feelings, thoughts, and motives that characterize an individual.
pruning
the degradation of synapses and dying off of neurons that are not strengthened by experience.
sensorimotor stage
iaget’s first stage of cognitive development (ages 0–2), when infants learn about the world by using their senses and by moving their bodies.
object permanence
the ability to realize that objects still exist when they are not being sensed.
preoperational stage
the second major stage of cognitive development (ages 2–5), which begins with the emergence of symbolic thought.
animistic thinking
belief that inanimate objects are alive.
egocentrism
viewing the world from one’s own perspective and not being capable of seeing things from another person’s perspective.