Psychotherapy: 102b - Intellecutal Disability

Question 1

What is the most common cause of mild intellectual disability?

Accepted Answer

Familial Intellectual DisabiltyUsually IQ > 50(Often, people with mild intellectual disability have family members with mild ID; Intelligence is highly heritable)

Question 2

The majority of people with Intellectual Disability have an IQ of [range]

Accepted Answer

The majority of people with Intellectual Disability have an IQ of 50-70This is considered “mild” intellectual disabilityCan receive an education, may live independently

Question 3

What is the difference between deterioration and degeneration?What does this tell us about the cause of intellectual disability?

Accepted Answer

DeteriorationPeriod of normal development, followed by an obvious injury and loss of neurologic functionCause = the injuryDegenerationPeriod of normal development, followed by a gradual and progressive loss of function without obvious injuryCause = likely metabolic disorder or progressive neurologic disease

Question 4

What is the most common inherited (genetic) cause of intellectual disability?

Accepted Answer

Fragile X syndrome

Question 5

What is the mean and standard deviation for IQ?

Accepted Answer

Mean = 100Standard deviation = 15

Question 6

At which stage of development does intellectual disability most often begin?

Accepted Answer

Prenatal developmentIncludes the following etiologies:Chromosomal (Down Syndrome)Single gene (Fragile X)Malformation syndromesNeural tube, hydrocephalus, microcephaly, anencephaly

Question 7

List 3 causes of intellectual disability with postnatal origin

Accepted Answer

Hypoxic birth injuryBrain injuryMetabolic disordersTechnically the mutation is there prenatally, but no pathologic changes have occured until the postnatal period

Question 8

Give an example of a cause of intellectual disability with perinatal origin

Accepted Answer

Infectious disease

Question 9

IQ < __ defines intellectual disability

Accepted Answer

IQ < 70 defines intellectual disabilityStandard Deviation = 15<70 is more than 2 standard deviations below the mean

Question 10

What is the most common chromosomal cause of intellectual disability?

Accepted Answer

Down Syndrome

Psychotherapy: 102b - Intellecutal Disability

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What is the most common cause of mild intellectual disability?

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Term	Definition
What is the most common cause of mild intellectual disability?	Familial Intellectual Disabilty Usually IQ > 50 (Often, people with mild intellectual disability have family members with mild ID; Intelligence is highly heritable)
The majority of people with Intellectual Disability have an IQ of [range]	The majority of people with Intellectual Disability have an IQ of 50-70 This is considered “mild” intellectual disability Can receive an education, may live independently
What is the difference between deterioration and degeneration? What does this tell us about the cause of intellectual disability?	Deterioration Period of normal development, followed by an obvious injury and loss of neurologic function Cause = the injury Degeneration Period of normal development, followed by a gradual and progressive loss of function without obvious injury Cause = likely metabolic disorder or progressive neurologic disease
What is the most common inherited (genetic) cause of intellectual disability?	Fragile X syndrome
What is the mean and standard deviation for IQ?	Mean = 100 Standard deviation = 15
At which stage of development does intellectual disability most often begin?	Prenatal development Includes the following etiologies: Chromosomal (Down Syndrome) Single gene (Fragile X) Malformation syndromes Neural tube, hydrocephalus, microcephaly, anencephaly
List 3 causes of intellectual disability with postnatal origin	Hypoxic birth injury Brain injury Metabolic disorders Technically the mutation is there prenatally, but no pathologic changes have occured until the postnatal period
Give an example of a cause of intellectual disability with perinatal origin	Infectious disease
IQ < __ defines intellectual disability	IQ < 70 defines intellectual disability Standard Deviation = 15 <70 is more than 2 standard deviations below the mean
What is the most common chromosomal cause of intellectual disability?	Down Syndrome