Lecture 10:Psychological development of children Dr.Reem AlSabah
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Transcript of Lecture 10:Psychological development of children Dr.Reem AlSabah
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Dr. Reem Al-Sabah
Faculty of Medicine
Psychology 220
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Science of Human Development The study of human development:
Seeks to understand how and why people change and remain the same over time.
Is a science
Studies all kinds of people
Studies change over time
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Continuity and Discontinuity Continuity refers to characteristics that are stable
over time
(e.g., biological sex)
Discontinuity refers to characteristics unlike those than came before
(e.g., speaking a new language, quitting a drug)
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Five Characteristics of Development
Multidirectional
Multicontextual
Multicultural
Multidisciplinary
Plasticity
PHOTODISC
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What is “plasticity”?
Plasticity refers to the fact that human traits can be molded into different forms, and yet people maintain a durability of identity.
It means that some aspects of development have the capacity for change, others may not.
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More About Change Over Time Butterfly effect
Sometimes a small event may culminate in a major event (e.g., one alcoholic drink at the wrong time during pregnancy).
No effect
Sometimes what seems to be a large event has little long-term impact (e.g., children in war-torn Bosnia).
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The Complex Patterns of Developmental Growth
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Contexts of Development HISTORICAL
In what ways do you differ from your grandparents? Great grandparents?
Cohort: group of people of the same age
Social constructions create “shoulds” (e.g., ages
one “should” marry)
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Contexts of Development
SOCIOECONOMIC STATUS (SES)
A combination of income and other factors (parental education, occupation, etc.).
The impact of SES depends on many factors.
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Contexts of Development CULTURE
Includes values, technologies, customs of a group of people.
In what ways does culture influence development?
PHOTODISC
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Ecological Model of Human Development
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Bronfenbrenner’s Ecological Model of Human Development
1. Microsystem: the relationships and interactions a child has with his/her immediate surroundings.
2. Mesosystem: the connection between the structures of the child’s microsystem.
3. Exosystem: the larger social system in which the child does not function directly .
4. Macrosystem: cultural values, customs, and laws.
5. Chronosystem: the dimension of time as it relates to a child’s environments.
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Three Domains of Development Biosocial = brain and body
Cognitive = thought processes, perceptual abilities, language
Psychosocial = emotions, personality, interpersonal relationships
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Nature-Nurture Debate What is more important in the course of human
development, genes or social environment?
Question: How much of any characteristic, behavior, or pattern of development is the result of genes, and how much is the result of experiences?
Both nature and nurture are always involved, to varying degrees.
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John Locke- 17th century British Philosopher “tabula rasa” or blank slate.
Babies' experiences get written on it.
All knowledge comes to us through our senses.
There is no built-in knowledge.
Charles Darwin Theory of evolution emphasis on heredity and
biological basis of human development.
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John Watson, B. F. Skinner (Behaviorists) Human nature is completely malleable.
You can train a child into being any kind of adult regardless of his heredity.
Interactionist approach both nature and nurture interact continuously
to guide development.
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Maturation
An innately determined (genetically programmed) sequence of growth and change that is relatively independent of external events
Interaction of genes and environment
(e.g., fetal development, motor development and speech development)
Note: the environment affects the rate at which children acquire the skills, not the ultimate skill level
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Stages of development
What do we mean by Stages?
behavior organized around a dominant theme.
all children go through the same stages in the same order.
the order of the stages does not vary, but environmental factors may speed up or slow down development.
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Critical Period crucial time periods in a person’s life when specific
events must occur if development is to proceed normally.
example: fetal development, 6-7 weeks after conception is important for development of sex organs.
It is the time of greatest vulnerability.
Each body structure has it’s own critical period.
Teratogens: substances/conditions that increase risk of prenatal abnormalities
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Critical Periods in Human Development
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Sensitive Period
Psychological development.
Periods that are optimal for a particular kind of development.
E.g., language acquisition, attachment.
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Fetal Alcohol Syndrome
A cluster of birth defects including abnormal facial characteristics, slow physical growth, and retarded mental development, caused by the mother’s drinking alcohol when pregnant
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Capacities of the Newborn
Methods of studying infant perception:
Preferential looking behavior An infant’s tendency to look at some objects
more than others.
Habituation method While infants look directly at novel objects, they
soon become bored with the same object- that is they habituate.
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Vision Least mature sense at birth.
Poor visual acuity, limited ability to change focus, and very near-sighted.
Binocular vision:
the ability to coordinate the two eyes to see one image
Facial preference- an inborn, unlearned preference for faces.
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Perceiving Depth
Begins at 3 months, fully developed at 6 months.
The “visual cliff” experiment
infants generally respond to cues for depth by the time they are able to crawl (6-8 months).
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Hearing Acute at birth
Newborn infants can detect the difference between very similar sounds (e.g. “pa” and “ba”) better than adults.
can distinguish human voice from other kinds of sounds.
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Taste and Smell
Preference for sweet-tasting liquids over liquids that are salty, bitter, sour or bland
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Motor Skills
Motor skill: any ability to move a part of the body
The sequence of motor skills:
Proximal-distal (from near to far). Development proceeds from center of body to extremities.
Cephalo-caudal (from head to tail). Development proceeds from the head down.
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Reflexes
Reflex:
An involuntary response to a particular stimulus
Three sets of reflexes are critical for survival:
1. Reflexes that maintain oxygen supply
2. Reflexes that maintain constant body temperature
3. Reflexes that manage feeding
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Learning and Memory
What’s your prediction: Can infants remember anything? For how long? What about a 1 or 2 year old?
What is your earliest memory?
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Memory Even very young infants (3 months) can remember IF:
Experimental conditions are “real life”
Motivation is high
Special measures aid memory retrieval (repetition and reminders)
Example: Rovee-Collier’s mobile experiment
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Mobiles and Memories
MICHAEL NEWMAN / PHOTOEDIT
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Learning and Memory
Important research findings for newborns
Good memory by the time they are 3 months old
Preference for human voices over other sounds
Preference of heartbeat sounds
Preference of mother’s voice over other women’s voices
Preference of familiar stories over unfamiliar stories
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The entire package of early sensation seems organized for two goals:
1. Social Interaction: to respond to familiar caregivers
2. Comfort: to be soothed amid the disturbance of infant life.
The most important experiences are perceived with all the senses at once (e.g., breast milk).