AP Psychology AMSCO Guided Notes

3.2: Physical Development Across the Lifespan

AP Psychology Guided Notes

AMSCO 3.2 - Physical Development Across the Lifespan

Essential Questions

  1. How does physical development from before birth through infancy, childhood, adolescence, and adulthood apply to behavior and mental processes?
I. Prenatal Development

1. What are the major developmental milestones that occur during each trimester of prenatal development?

2. How do the placenta and circulatory system support fetal growth and development?

3. What is the age of viability and why is it significant for fetal survival?

A. Prenatal Susceptibility

1. What are teratogens and during which period of prenatal development is the embryo most vulnerable to their effects?

2. How can maternal illness, genetic mutations, hormonal imbalances, and environmental influences affect prenatal development?

3. What factors determine the extent to which exposure to harmful substances during pregnancy might affect the developing fetus?

II. Infancy

1. What is maturation and how does it interact with environmental factors during infancy?

2. What is the APGAR test and why was it important for reducing infant mortality?

A. Reflexes

1. What is a reflex and how do survival reflexes like rooting and sucking help newborns meet their basic needs?

2. How do the grasping, Moro, stepping, and Babinski reflexes differ in their triggers and duration?

3. Why do most newborn reflexes disappear within the first six months and what replaces them?

B. Motor Development

1. What is gross motor coordination and how does motor development progress from the body's midline outward?

2. How do fine motor skills develop and what is the significance of the pincer grasp?

3. Why do babies develop head control before walking, and how does body proportionality change during infancy?

C. Development of Perceptual Skills

1. What did the visual cliff experiment demonstrate about infants' depth perception and fear of heights?

2. How do 12-month-old infants use social referencing to guide their behavior in ambiguous situations?

3. What criticisms have been raised about the visual cliff experiment and what do they suggest about the role of experience in perceptual development?

D. Critical or Sensitive Periods

1. What is a critical period and how does heightened brain plasticity during these periods affect development?

2. How do early visual experiences and language exposure during critical periods affect later abilities?

3. What did Konrad Lorenz discover about imprinting in goslings and how does this relate to human attachment?

4. How does the sensitive period for human attachment differ from the critical period for attachment in other animal species?

III. Changes in Adolescence

A. Puberty

1. What triggers puberty and how do primary sex characteristics develop in males and females?

2. What is menarche and spermarche and why is the timing of puberty varying earlier than in previous generations?

B. Growth Spurt

1. What is a growth spurt and what is the typical pattern of physical growth during this period?

2. How does the timing and experience of early maturation differ between girls and boys?

3. How does the growth spurt affect body proportions and the distribution of muscle and fat?

C. Other Physical Changes

1. What are secondary sex characteristics and how do they differ from primary sex characteristics?

2. How do testosterone, estrogen, and progesterone differ in their production and functions in males and females?

D. Psychological and Emotional Changes

1. How do hormonal changes and brain development contribute to mood swings and heightened emotions in adolescents?

2. How does puberty affect family relationships and adolescent independence?

IV. Midlife and Beyond

A. Reproductive Ability

1. What is menopause and how does it differ from the changes in reproductive ability that men experience?

2. How do changes in reproductive ability affect self-concept, sexual relationships, and family dynamics in adulthood?

B. Other Physical Changes

1. What physical changes occur by middle age in muscle mass, bone density, metabolism, and sensory acuity?

2. How do decreases in muscle strength and bone density affect mobility and flexibility in older adults?

3. What is presbyopia and presbycusis and how do these age-related changes affect daily functioning?

4. How do slowing cognitive processes and nerve conduction velocity affect reaction time in older adults?

Key Terms

auditory sensory acuity

maternal illness

rooting reflex

critical period

menarche

sensitive period

flexibility

menopause

sensory acuity

genetic mutation

mobility

spermarche

gross motor coordination

puberty

teratogen

growth spurt

reaction time

visual sensory acuity

imprint

reflex