Chapter 8: Human Development Flashcards
examines the physical, cognitive, and socioemotional changes across the lifespan.
DEVELOPMENTAL PSYCHOLOGY
Show development because of heredity, or because our interactions with the environment.
Nature vs Nurture
examines people of different ages at a single point in time
The Cross-Sectional method
examines one sample of people over a period of time, to determine age related changes
Longitudinal Method
examines groups of people from different ages, following them across time. Combination of cross-sectional and Longitudinal
Cross-Sequential Method
a single cell formed by the union of the sperm cell and an egg
Zygote
mom has one egg, and dad has one sperm. That zygote splits in half. 100% genetically the same
Monozygotic twin (identical)
Mom has two eggs and dad has two sperm. Two zygotes growing at the same time. Genetically different
Dizygotic twin (fraternal)
from conception to the end of the second week. Conception occurs at the end of two weeks. End when it implants itself to the uterine wall.
Germinal period
third through the eighth week. It becomes an embryo.
Embryonic period
in the germinal period, all the cells are the same. They become different in the embryonic period
Cells differentiate
first two months of pregnancy
Major organs systems form:
time frame when an organism is sensitive to the environmental factors.
Critical period
environmental agents, that can damage the growing zygote, embryo, or fetus. Drugs (smoking: Sudden infant death syndrome), environmental factors, infections, and maternal disease.
Teratogens
automatic inborn responses to stimuli some are necessary for survival, others serve no obvious purpose, but may be evolutionary in nature Ex: Rooting Sucking Grasping Babinski Stepping Moro (startle)
Reflexes
Crying: starts at birth
Cooing: vowels. Begins between two and three months.
Babbling: ba ba ba, ma ma ma, 4-6 months first word
Telegraphic speech:two word phrases, 18 months.
The sequence of acquisition
use senses and motor skills to learn about their world
Sensorimotor Stage (birth-2)
milestone of the sensorimotor stage, Infant realizes that objects and people exists even when they’re out of mind or touch
Object permanence
children start to use language to explore and understand their world.
Preoperational Stage (2-7)
hard time seeing the perspective of others. Person is only able to image the world from his or her own perspective
Egocentrism
unchanging properties of volume mass or amount in relation of appearance. Kids in the preoperational stage can’t perform conservation tasks
Conservation