Chapter 9 Human Development Flashcards
Fundamental Issues: Nature vs Nurture
Developmental psychologist investigate the influence of biological, environmental, social, cultural, and behavioral factors on the development at every age and stage of life.
Critical period
A period during someone’s development in which a particular skill or characteristic is believed to be most readily acquired.
Cross-sectional research
Studies a variable or group of variables among a group of participants at different ages or developmental stages
Longitudinal research
Tracks a particular variable or group of variables in the same group of participants over time, sometimes years
Sequential research
A cross-sequential design is a research method that combines both a longitudinal design and a cross-sectional design. It aims to correct for some of the problems inherent in the cross-sectional and longitudinal designs
Conception/Zygote
When the single sperm enters the egg, conception occurs. The combined sperm and egg is called a zygote
Germinal period
Also called the zygotic period represents the first two weeks of prenatal development. By the end of the 2 week germinal period, the single-cell zygote has developed into a cluster of cells called the embryo
Embryonic period
Begins at week 3 and extends through week 8. Most susceptible to teratogens. Development of sex organs. The embryo is housed in the amniotic sac. The umbilical cord nourishes the baby and removes waste. The placenta acts as a filter.
Fetal period
The main task during the next seven months is for the body systems to grow and reach maturity in the preparation for life outside the mother’s body
Teratogen
Harmful agents or substances that can cause abnormal development or birth defects
Fetal Alcohol Syndrome (FAS)
Excessive drinking can cause fetal alcohol syndrome, which is characterized by physical and mental problems. Abnormal facial features, poor coordination, learning disabilities, behavior problems, and intellectual disability.
Infant Abilities
At birth, they possess motor reflexes such as the sucking reflex and the grasping reflex. Newborns can also hear, smell, touch, taste, and see, and these sensory abilities develop quickly.
Rooting reflex
The infant turns towards the source of touch and opens his mouth
Sucking reflex
Touching the newborn’s lips evokes the sucking reflex
Babinski reflex
The Babinski reflex occurs after the sole of the foot has been firmly stroked. The big toe then moves upward or toward the top surface of the foot. The other toes fan out.