physical and cognitive development in middle childhood
DESCRIPTION
Chapter 9. PHYSICAL AND COGNITIVE DEVELOPMENT IN MIDDLE CHILDHOOD. Learning Objectives. PHYSICAL DEVELOPMENT. The Growing Body. Slow but steady… Height changes Weight changes Only time in lifespan when on average girls taller than boys Variation in heights up to 6 inches not unusual. - PowerPoint PPT PresentationTRANSCRIPT
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PHYSICAL AND COGNITIVE DEVELOPMENT IN MIDDLE CHILDHOOD
Chapter 9
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Learning Objectives
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PHYSICAL DEVELOPMENT
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The Growing Body
Slow but steady…•Height changes
•Weight changes
•Only time in lifespan when on average girls taller than boys
•Variation in heights up to 6 inches not unusual
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Cultural Patterns of Growth
Influences•Sufficient or insufficient nutrition
•Disease
•Genetic inheritance
•Familial stress
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Should hormones be used to make short children grow?
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Artificial Hormones: Points to Consider
• Currently taken by thousands of children with insufficient natural growth hormones
• Costly
• Some side effects
• Long-term studies of usage not available
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Nutritional Benefits
• Children who received higher levels of nutrients had more energy and felt more self-confident than those whose nutritional intake was lower.
What policy implications does this finding suggest?
(Source: Based on Barrett & Radke-Yarrow, 1985.)
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Benefits of Adequate Nutrition
Relationship to social and emotional functioning•More peer involvement•More positive emotions•Less anxiety•More eagerness to explore new environments•More persistent in frustrating situations•Generally higher energy levels•(See Guatemalan study, Barrett & Frank, 1987)
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Consequences of Inadequate Nutrition
Undernutrition is implicated in more than half of all child deaths worldwide
Undernourished children•Lowered resistance to infection
•More likely to die from common childhood ailments and respiratory infections
•Frequent illness that impacts growth
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What would Ugly Betty's life be like in a real elementary school?
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Obesity
• Most common causes:– Genetic factors– Lack of physical activity– Unhealthy eating patterns– Combination of these factors
• Only in rare cases is being overweight caused by a medical condition such as a hormonal problem
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Costs of Childhood Obesity
• Obese children– More likely to be
overweight as adults– Greater risk of heart
disease, diabetes, and other diseases
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The other side of “fat”
• Even very young children are aware of society's fixation on thinness
• Lowered self-esteem has been associated with being overweight in girls as young as 5
• Attitude was closely correlated with parents' perceptions
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Balanced Diet?
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MOTOR DEVELOPMENT
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Gross Motor Skills
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Do boys and girls differ in motor skills?
Gender differences in gross motor skills became increasingly pronounced during middle childhood•Boys outperform girls
•Little or no difference when equal participation in exercise/activities
•Influenced by societal expectations
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Fine Motor Development
• Necessary for wide range of school-related tasks
• Influenced by increase in amount of myelin speeds up electrical impulses between neurons
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Health and School-agers
Middle childhood is period of robust health•Routine immunizations have produced considerably lower incidence of life-threatening illnesses
•More than 90 percent of children in middle childhood have at least one serious medical condition but most are short term illnesses
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Asthma
About asthma•15 million US children•Periodic attacks of wheezing, coughing, shortness of breath
•Theories about increased incidence•Increased air pollution •More accurate diagnosis•Exposure to “asthma triggers”•Poverty
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Other Health Risks
• Accidents– Motor vehicles– Bikes– Fires and burns– Drowning– Gun-related deaths
• Reduced by use of seatbelts and helmets
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PSYCHOLOGICAL DISORDERS
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Identifying the Problem
• Psychological disorders in children overlooked for years– Incidence– Symptoms inconsistent from those of adults– Antidepressant drugs used for treatment have never
been approved by governmental regulators for use with children
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Drugs As Treatment
FOR•Depression and other psychological disorders treated successfully using drug•More traditional nondrug therapies that largely employ verbal methods simply are ineffective
AGAINST•Long-term effectiveness of antidepressants with children not known•Use of antidepressants on developing brains and long-term consequences more generally not known•Correct dosages for children of given ages or sizes not known
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Depression
• Key defining features of major depressive disorder in children and adolescents are same as they are for adults
• Way symptoms are expressed varies with developmental stage of child
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Children with Special NeedsSensory Difficulties: Visual, Auditory, and Speech
Problems
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Do you see what I see?
Difficulties in seeing •Blindness (20/200 after correction)
•Partial sightedness (20/70 after correction)
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Say what?
• Loss of hearing or some aspect of hearing
• Affects 2 percent of school-age children
• Varies across number of dimensions
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Children Who Do Not Hear
• Children with speech-language impairment have an impairment of their speech and/or language structures and functions
• Parts of the body used in speaking and understanding - the brain, nerves, mouth and throat - may be damaged or not developing or working properly
• Level of speech-language impairment can range from mild to severe
• Impairment may be obvious before school or not show itself until the child has difficulty learning at school
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I Am Talking to YOU!
Definition•Impairment of speech articulation, voice, fluency, or the impairment or deviant development of language comprehension and/or expression
•Impairment of use of spoken or other symbol system that adversely affects educational performance
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Stuttering
• Substantial disruption in rhythm and fluency of speech
• Most common speech impairment; 20 percent of all children go through stage
• No clear-cut answers to the causes of stuttering
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Learning Disabilities Discrepancies Between Achievement and Capacity
to Learn
• Difficulties in acquisition and use of listening, speaking, reading, writing, reasoning, or mathematical abilities
• 2.8 million children in US
• Dyslexia, dysgraphia, dyscalculia– ADD/ADHD
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The Brains of Children With ADHD
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The Basic Definition in Individuals with Disabilities Education Act (IDEA)
“Learning disability” = umbrella term
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Developmental Reading Disability
Dylexia affects 2 to 8 percent of elementary school children•Reading difficulties
•Inability to separate sounds in words
•Problems sounding out words
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Developmental Writing Disabilities
Writing involves several brain areas and functions (dysgraphia)
•Brain networks for vocabulary, grammar, hand movement, and memory must all be in good working order
•Developmental writing disorder may result from problems in any of these areas
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Developmental Arithmetic Disability
• Arithmetic involves recognizing numbers and symbols, memorizing facts, aligning numbers, and understanding abstract concepts like place value and fractions
• Any of these may be difficult for children with developmental arithmetic disorders, also called dyscalculia
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What are the most common signs of ADHD?
• Persistent difficulty in finishing tasks, following instructions, and organizing work
• Inability to watch an entire television program
• Frequent interruption of others or excessive talking
• Tendency to jump into a task before hearing all the instructions
• Difficulty in waiting or remaining seated
• Fidgeting, squirming
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Diagnostic Criteria
Behaviors must: •Be excessive, long-term, and pervasive
•Appear before age 7, and continue for at least 6 months
•Create a real handicap in at least two areas of a person's life, such as school, home, work, or social settings
•Be different than "normal" distractibility or overstressed lifestyle prevalent in our society
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ADHD Treatment Controversy
Ritalin or Dexadrine reduce activity levels in hyperactive children and are routinely prescribe•Effective in increasing attention span and compliance BUT side effects considerable and long-term health consequences unclear
•Help scholastic performance in short run BUT long-term evidence for continuing improvement is mixed
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Overprescribing Ritalin?
The number of children being given drugs for psychological disorders has increased significantly over the last decade.
(Source: U.S. Surgeon General, 2000.)
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Are there other treatments for ADD/ADHD?
Treatments•Behavioral therapy
•Diet
•Other?
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Keeping Children Fit
• Make exercise fun. Gear activities to the child's physical level and motor skills.
• Encourage the child to find a partner. Start slowly.
• Urge participation in organized sports activities, but do not push too hard.
• Don't make physical activity, such as jumping jacks or push-ups, a punishment for unwanted behavior.
• Provide a healthy diet.
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Review and Reply
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Review and Reply
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Review and Apply
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INTELLECTUAL DEVELOPMENT
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What are advances and limitations, in thinking during childhood?
Approaches•Piaget
•Information-processing
•Vygotsky
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Intellectual Development: Piaget
Concrete operational stage•7 and 12 years
•Characterized by active and appropriate use of logic– Logical operations applied to concrete problems– Conservation problems; reversibility; time and speed,
decentering
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Routes to Conservation
After being told that the two cars traveling on Routes 1 and 2 start and end their journeys in the same amount of time, children who are just entering the concrete operational period still reason that the cars are traveling at the same speed.
Later, however, they reach the correct conclusion: that the car traveling the longer route must be moving at a higher speed if it starts and ends its journey at the same time as the car traveling the shorter route.
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How does preoperational thought emerge?
Shift from preoperational thought to concrete operational thought does not happen overnight •Children shift back and forth between preoperational and concrete operational thinking
•Once concrete operational thinking is fully engaged, children show several cognitive advances
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Conservation Training
Rural Australian Aborigine children trail their urban counterparts in the development of their understanding of conservation; with training, they later catch up. Without training,around half of 14-year-old Aborigines do not have an understanding of conservation.
What can be concluded from the fact that training influences the understanding ofconservation?
(Source: Based on Dasen, Ngini, & Lavallee, 1979.)
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Piaget Was Right…Piaget Was Wrong
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Information Processing
Increasing ability to handle information•Memory improvement
•Short term memory capacity improvement
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Thinking about Memory: Metamemory
• Understanding about processes that underlie memory
• Improves during school age years
• Helps children use control strategies (conscious, intentional tactics to improve functioning)
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Can children be trained to be more effective in use of control strategies?
• School-age children can be taught to use particular strategies– Keyword strategies
• See Center for Development and Learning (10 Strategies to Enhance Memory) for additional strategies
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Vygotsky's Approach
Cognitive advances occur through exposure to information within zone of proximal development (ZPD)•Influential in development of classroom practices
•Cooperative learning
•Reciprocal teaching
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LANGUAGE DEVELOPMENT
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Mastering the Mechanics of Language in Middle Childhood
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Metalinguistic Awareness
One of most significant developments in middle childhood is children's increasing understanding of their own use of language •By age 5 or 6
– Understand language is governed by set of rules
•By age 7 or 8– Realize that miscommunication be due to factors
attributable not only to themselves, but to person communicating with them
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How does language promote self-control?
• Helps school-age children control and regulate behavior
• “Self-talk” used to help regulate behavior
• Effectiveness of self-control grows as linguistic capabilities increased
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The Diversity of Language Other Than The Diversity of Language Other Than English Spoken in the United StatesEnglish Spoken in the United States
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Long-term Bilingualism
• According to survey data, even Spanish, a language thought to be particularly enduring in the United States, seldom lasts beyond the second or third generation (Pease-Alveraz, 1993)
Why do you think this occurs?
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Cognitive Advantages of Bilingualism
• Greater cognitive flexibility
• Higher self-esteem
• Greater meta-linguistic awareness
• Potential improved IQ scores
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Review and Apply
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Review and Apply
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Review and Apply
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SCHOOLING: THE THREE Rs (AND MORE) OF MIDDLE CHILDHOOD
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Schooling Around the World and Across Genders: Who Gets Educated?
• Primary school education universal right and legal requirement?
• Children in developing countries may have less access
• Females in these countries receive less formal education than males
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The Plague of Illiteracy
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What was the first book you remember reading?
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Reading: Learning to Decode Meaning Behind Words
• No other task that is more fundamental to schooling than learning to read
• Reading involves significant number of skills
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Development of Reading Skills
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How Should We Teach Reading?
• Disagreement about nature of mechanisms by which information is processed during reading– Code-based approaches – Whole-language approaches
• National Reading Panel and National Research Council support reading instruction using code-based approaches
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Brain Changes and Reading
• Whatever approach is used to teach reading, reading produces significant changes in the wiring of the brain
• It boosts the organization of the visual cortex of the brain and it improves the processing of spoken language
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Educational Trends in the Next Millennium
• U.S. schools are experiencing return to educational fundamentals embodied in traditional three Rs
• Elementary school classrooms today stress individual accountability, both for teachers and students
• Elementary schools have also paid increased attention to issues involving student diversity and multiculturalism
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Cultural Assimilation or Pluralistic Society?
Multicultural education developed in part as a reaction to a cultural assimilation model in which the goal of education was to assimilate individual cultural identities into a unique, unified American culture
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Do you agree?
The social and emotional development of children are taking a back seat to literacy education?
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Cultural Assimilation or Pluralistic Society?
• Cultural assimilation model• Pluralistic society model
• Form a small group and take five minutes to record all the group definitions, characteristics, and thoughts about each model.
• Which model makes the most sense to you?
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Fostering a Bicultural Identity
• Today, most educators agree that minority children should be encouraged to develop a bicultural identity
• School systems encourage children to maintain their original cultural identities while they integrate themselves into dominant culture
• More contemporary approaches emphasize a bicultural strategy in which children are encouraged to maintain simultaneous membership in more than one culture
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Intelligence: Determining Individual Strengths
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How do you define intelligence?
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Intelligence Benchmarks: Differentiating the Intelligent from the Unintelligent
Measuring IQ: Present-day approaches to intelligence•Binet's Test
– Stanford-Binet Intelligence Scales, Fifth Edition (SB5)
•Wechsler Intelligence Scale for Children—Fourth Edition (WISC-IV)
•Kaufman Assessment Battery for Children, 2nd Edition (KABC-II)
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Measuring Intelligence
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What IQ Tests Don't Tell: Alternative Conceptions of Intelligence
• Spearman's g• Catell: fluid and crystallize intelligence• Gardner: 8 intelligences• Vygotsky: dynamic assessment• Sternberg: triarchic theory of intelligence
Wow! So many tests…so little time. Why do you think there are so many tests?
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Group Differences in IQ
• Previous experiences of test-takers may have a substantial effect on their ability to answer questions
• Cultural background and experience have the potential to affect intelligence test scores
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Racial Differences in IQ
• The question of how to interpret differences between intelligence scores of different cultural groups lies at the heart of one of the major controversies in child development
• Mean score of African Americans tends to be about 15 IQ points lower than the mean score of whites—although the measured difference varies a great deal depending on the particular IQ test employed
Nature or Nurture?
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For Whom the Bell Told!!
The Bell Curve Controversy •Herrnstein and Murray: Average 15-point IQ difference between whites and African Americans is due primarily to heredity
• Most developmentalists and psychologists responded by arguing that the racial differences in measured IQ can be explained by environmental differences between the races
•Little evidence to suggest that IQ is a cause of poverty and other social ills
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Below Intelligence Norms
Mental Retardation•Public Law 94-142, the Education for All Handicapped Children Act
– Least restrictive environment– Mainstreaming– Full inclusion
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Benefits of Mainstreaming
• Ensure that all persons, regardless of ability or disability, have access to full range of educational opportunities, and fair share of life's rewards
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How is intellectual disability identified?
American Association on Intellectual and Developmental Disabilities•Definition
– Familial intellectual disability– FAS– Down's Syndrome
•Levels– Mild– Moderate– Severe– Profound
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Above Intelligence Norms
• Gifted– Federal government guideline (P.L. 97-35 Sec 582)
• Research suggests that highly intelligent people tend to be outgoing, well adjusted, and popular
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Above Intelligence Norms:Educating the Gifted and Talented
• Acceleration• Enrichment
• How do the needs of children with higher abilities compare with children with lower abilities?
• What consequences might your decision have if funding for education is very limited?
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Review and Apply
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Review and Apply
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Review and Apply
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EPILOGUE
Look back to the prologue, about about La-Toya Pankey's development of reading skills, and answer the following questions:•Judging from the cues provided in the prologue, how would you have estimated La-Toya's chances for academic success before you learned about her ability to read? Why?
•If you wished to isolate the factors in La-Toya's genetic or environmental background that contributed to her interest and ability in reading, how would you proceed? Which factors would you examine? What questions would you ask?
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EPILOGUE
• Given her circumstances, what threats to academic accomplishment does La-Toya still face? What advantages does she seem to have?
• Discuss La-Toya's situation in light of the premises of the authors of The Bell Curve. If La-Toya succeeds academically, outperforming students of higher socioeconomic status, how would the authors explain this phenomenon? How do you explain it?