Chapter 9
Terms in this set (20)
Cross-sectional compares different age groups at one time but may reflect cohort effects. Longitudinal follows the same people over time to track individual change but takes longer and may lose participants.
A cohort effect occurs when differences between age groups are due to their unique experiences or historical contexts, not aging itself.
Germinal (conception to ~2 weeks): cell division and implantation.
Embryonic (~2–8 weeks): major structures form.
Fetal (~8/9 weeks to birth): growth and maturation.
A teratogen is an exposure that harms prenatal development. Effects depend on the type, timing during pregnancy, and dose of exposure.
Examples include alcohol, tobacco smoke, and Zika virus infection during pregnancy.
Sensorimotor (0–2): learns through action, object permanence.
Preoperational (2–7): symbols and language, limited logic.
Concrete operational (7–11): logic about concrete situations.
Formal operational (12+): abstract and hypothetical reasoning.
Assimilation fits new information into existing frameworks.
Accommodation changes the framework to incorporate new information.
Secure: comforted by caregiver.
Avoidant: avoids or shows little response.
Resistant: distressed, seeks and resists comfort.
Disorganized: confused or contradictory behavior.
Vygotsky emphasizes social and cultural guidance and learning through interaction, while Piaget focuses on stages of individual cognitive development.
ZPD is what a learner can do with help but not yet alone.
Scaffolding is temporary support given to a learner that is gradually withdrawn as they become more competent.
Adolescence includes puberty (reproductive maturity), development of abstract thought, identity formation, peer relationships, and growing independence.
Primary sex characteristics are reproductive organs.
Secondary sex characteristics are other traits that develop at puberty, like body hair and voice changes.
Preconventional: based on personal consequences.
Conventional: based on rules and social approval.
Postconventional: based on internal principles.
Fluid intelligence is the ability to solve new problems.
Crystallized intelligence is accumulated knowledge and skills.
Senescence is the biological aging process involving gradual physical decline.
They interact dynamically, shaping cognitive and emotional growth through biological maturation and environmental experiences.
Advantages: track individual change over time.
Disadvantages: time-consuming and risk of participant attrition.
Object permanence is the understanding that objects continue to exist when out of sight, developing in the sensorimotor stage (0–2 years).
It emphasizes understanding the reasoning behind moral judgments, not just the decisions themselves.