Chapter 5 Flashcards
Developmental Psychology
A branch of psychology that studies physical, cognitive, and social development throughout the lifespan.
Cross-Sectional Studies
Research that compares people of different ages at the same point in time.
Longitudinal Studies
Research that follows and retests the same people over time.
Zygote
The fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo. The inner cell clump become the embryo while the outer cell clump becomes the placenta.
Embryo
The developing human organism from about 2 weeks after fertilization through the second month of pregnancy.
Fetus
The developing human organism from 9 weeks after conception to birth. During the 6th month, organs develop enough for the fetus to survive on its own and the fetus is responsive to sound.
Tetratogens
Agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and can cause harm. No drinking or smoking while pregnant.
Fetal Alcohol Syndrome
Physical and cognitive abnormalities in children caused by a pregnant woman’s heavy drinking. In severe cases, signs include a small and out-of-proportion head and abnormal facial features.
Newborn Reflexes
- The startle reflex is an adaptive reflex characterized by the arms and legs spreading out, quickly followed by fist clenching and loud crying.
- The grasping reflex is when babies strongly clench something in their hands.
Habituation
Decreasing responsiveness with repeated stimulation.
Maturation
Biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.
Infancy and Childhood Brain Development
There is rapid development of branching neural networks after birth, which causes the infant brain size to increase rapidly and increases control in attention and behavior. The brain’s association areas are the last to develop.
Infancy and Childhood Motor Development
The sequence is universal, and caused by the rapid growth of the cerebellum that creates the readiness to learn physical skills.
Infancy and Childhood Cognitive Development
The rapid neuron growth disrupts stored memories, which is why people don’t remember early life, and memory gets better as we age due to the development of the hippocampus and the frontal lobes. The two-track mind stores unconscious memories from our childhood.
Cognition
All the mental activities associated with thinking, knowing, remembering, and communicating.
Schema
A concept or framework that organizes and interprets information.
Assimilation
Interpreting our new experiences in terms of our existing schemas.
Accommodation
Adapting our current schemas to incorporate new information.
Sensorimotor Stage
(0-2) The stage at which infants know the world mostly in terms of their sensory impressions and motor activities. Around 8 months, children develop object permanence and stranger anxiety.
Object Permanence
The awareness that things continue to exist even when not perceived.
Preoperational Stage
(2-7) The stage at which a child learns to use language but does not yet comprehend the mental operations of concrete logic. Children this age display egocentrism. Around 6 years, children develop the concept of conservation.
Conservation
The principle that properties such as mass, volume, and number remain the same despite changes in the forms of objects.
Egocentrism
Difficulty of taking another’s point of view.