Chapter 10 Human Development Across the Lifespan Development
- Slides: 52
Chapter 10 Human Development Across the Lifespan
• Development = sequence of age-related changes that occur as person progresses from conception - death.
PROGRESS BEFORE BIRTH: PRENATAL DEVELOPMENT
• prenatal period = from conception to birth, usually encompassing nine months of pregnancy • placenta = structure that allows oxygen & nutrients to pass into fetus from mother’s bloodstream & bodily wastes to pass out to mother • Source: Microsoft Clip. Art
The Course of Prenatal Development • Germinal (first 2 weeks) • Embryonic (2 weeks - 2 months) = period of great vulnerability, as most physiological structures are being formed • Source: Micro. Soft Clip. Art
The Course of Prenatal Development • Fetal stages (2 months - birth) = brings rapid growth as physiological systems mature • Threshold of viability at around 23 -26 weeks. • Source: Microsoft Clip. Art
Environmental Factors & Prenatal Development • Nutrition • Severe maternal malnutrition increases risk of birth complications & neurological deficits for newborn • Stress and Emotion • Prospective mothers’ emotional reactions to stressful events can disrupt delicate hormonal balance that fosters healthy prentatal development
Environmental Factors & Prenatal Development • Drug Use • Maternal use of illicit drugs can be dangerous to unborn child. • Alcohol Consumption • Even normal social drinking & routine tobacco use can be hazardous during prenatal development
Environmental Factors & Prenatal Development • Maternal Illness • can interfere with prenatal development. • Environmental Toxins • Exposure during prenatal development can “program” fetal brain in ways that influence vulnerability to various types of illness decades later
THE WONDROUS YEARS OF EARLY CHILDHOOD
Exploring the World: Motor Development • Motor development = progression of muscular coordination required for physical activities • Maturation = development that reflects gradual unfolding of one’s genetic blueprint
Understanding Developmental Norms • Developmental norms = typical (median) age at which individuals display various behaviors & abilities
Early Emotional Development: Attachment • Attachment = close emotional bonds of affection that develop between infants & their caregivers. • separation anxiety—emotional distress seen in many infants when separated from people with whom they are attached
Theories of Attachment • Bowlby evolutionary theory that attachment relationships have survival value. • Attachment emerges out of an interplay between infant & parent.
Patterns of Infant/Mother Attachment • Secure = play & explore comfortably with parent present, become visibly upset when leaves, & are quickly calmed by their return • Anxious-ambivalent = anxious when parent is near & protest excessively when leaves, but are not comforted when they return
Patterns of Infant/Mother Attachment • Avoidant = seek little contact with their parent and often are not distressed when they leave
Attachment Theory and its Effects on Adult Relationships
Learning to Communicate: Language Development • 1 st words around 1 st birthday • Vocab spurt begins 18 months
Combining Words • Combine words by the end of 2 nd year • Early sentences are telegraphic • mainly of content words; articles, prepositions, & other less critical words omitted.
PERSONALITY & COGNITIVE DEVELOPMENT IN CHILDHOOD
Becoming Unique: Personality Development • Stage = developmental period during which characteristic patterns of behavior are exhibited & certain capacities become established.
Erikson’s Stage Theory • Individuals evolve through 8 stages over life span. • Each stage the person wrestles with two opposing tendencies evoked by that stage’s psychosocial crisis. • Source: Microsoft Clip. Art
Erikson’s Stage Theory • Stages through Childhood. • 1) Trust vs. Mistrust – Does my world support my needs? • 2) Autonomy vs. Shame – Can I do things for myself? • 3) Initiative vs. Guilt – Am I a good or bad? • 4) Industry vs. Inferiority – Am I competent? • Source: Microsoft Clip. Art
Erikson’s Stage Theory
Growth of Thought: Cognitive Development • Cognitive development = transitions in youngsters’ patterns of thinking, including reasoning, remembering, & problem solving
Overview of Piaget’s Stage Theory • (1) sensorimotor period (birth to age 2) • Object permanence = child recognizes that objects continue to exist even when they are no longer visible.
Overview of Piaget’s Stage Theory • (2) preoperational period (2 - 7) • Centration = tendency to focus on just 1 feature of problem, neglecting other important aspects • Irreversibility = inability to envision reversing an action • Egocentrism = thinking characterized by limited ability to share another person’s viewpoint
Overview of Piaget’s Stage Theory • (2) preoperational period (2 - 7) • Not yet mastered principle of conservation. • Conservation • awareness that physical quantities remain constant in spite of changes in their shape or appearance.
Overview of Piaget’s Stage Theory • (3) concrete operational period ( 7 - 11) • decline in egocentrism & gradual mastery of conservation as it applies to liquid, mass, number, volume, area, and length.
Overview of Piaget’s Stage Theory • (4) formal operational period (11 onward) • Children begin to apply their operations to abstract concepts in addition to concrete objects • further developments in thinking are changes in degree rather than fundamental changes in nature of thinking
The Development of Moral Reasoning • Morality = ability to distinguish right from wrong & behave accordingly.
Kohlberg’s Stage Theory ~ Moral Reasoning • Focuses on moral reasoning rather than overt behavior • Progresses through six stages related to age & determined by cognitive development.
Kohlberg’s Stage Theory ~ Moral Reasoning • Preconventional - emphasizes external authority. • Conventional - focuses on adherence to social order. • Postconventional - involves working out a personal code of ethics.
Kohlberg’s Stage Theory
THE TRANSITION OF ADOLESCENCE
Physiological Changes • Growth spurt at puberty is prominent event involving development of reproductive maturity & secondary sex characteristics.
Physiological Changes • primary sex characteristics—the structures necessary for reproduction • secondary sex characteristics—physical features that distinguish one sex from other but not essential for reproduction
Neural Development • During adolescence neurons are becoming more myelinated, while synaptic pruning continues to sculpt neural networks. • Prefrontal cortex (executive control center) appears to be the last area of the brain to mature fully. • Contributing to adolescent risk taking.
Peer Influence on Risk Taking
The Search for Identity • Erikson’s 5 th stage; Identity vs. Role Confusion. • James Marcia identified four patterns of identity formation: • Foreclosure = premature commitment to visions, values, & roles —typically prescribed by parents (conformity)
The Search for Identity • Moratorium = delaying commitment to experiment w/ alternative ideologies & careers • Identity diffusion = a state of rudderless apathy, with no commitment to an ideology • Identity achievement = arriving at sense of self & direction after some consideration of alternative possibilities, associated w/ higher self-esteem, conscientiousness, security, achievement motivation, & capacity for intimacy
THE EXPANSE OF ADULTHOOD
Personality Development • Personality marked by both stability and change, • Agreeableness & conscientiousness tend to increase in the adult years, • Extraversion, neuroticism & openness to experience tend to decline
Erikson’s View of Adulthood • 6) Intimacy vs. Isolation - develop the capacity to share intimacy with others • 7) Generativity Versus Self-Absorption - to acquire a genuine concern for the welfare of future generations • 8) Integrity Versus Despair - to find meaning and satisfaction in their lives, rather than wallow in bitterness and resentment
Memorize Erikson's 8 Theories of development fast - phycology test prep
Adjusting to Marriage • Difficulty adjusting to marriage is more likely when spouses have different role expectations, especially about housework.
Adjusting to Parenthood • (1) parents exhibit lower marital satisfaction than comparable nonparents, • (2) mothers of infants report the steepest decline in marital satisfaction, • (3) more children couples have, lower their marital satisfaction tends to be ( Twenge, Campbell, & Foster, 2003).
Aging & Physiological Changes • age-related physiological transitions include changes in appearance, sensory losses (especially in vision and hearing), & hormonal changes.
Aging & Neural Changes • Drastic mental decline not part of normal aging process, • Dementia 5%-8% of people ages 65 -70 and 15%-20% of those aged 75 -80.
Aging & Neural Changes • Alzheimer’s disease has a subtle onset marked by chronic forgetting of newly learned information, followed by a progressive deterioration over 8 -10 years. • causes of disease not well understood, although genetic factors & chronic inflammation appear to contribute.
Aging & Cognitive Changes • Studies suggest that high levels of mental activity in late adulthood can delay the typical age-related declines in cognitive functioning.
Death & Grieving • Grieving is a process whereby we reconcile ourselves with significant loss, particularly of a someone or something loved • Includes emotional, physical, cognitive, behavioral, social, cultural and philosophical responses.
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