Week 2: Intelligence Flashcards
What is the nature of intelligence?
- multifaceted
- functional
- defined and shaped by culture and environment
- defined in a number of different ways
How is intelligence functional?
- helps you adapt to your environment
- helps you navigate life better
What is the psychometric approach to intelligence testing
Devising tests to measure a person’s cognitive level relative to others in a population
Binet and Simon did what?
Were commissioned by French government to develop the first intelligence tests to measure judgement and reasoning of school children
What is the intelligence quotient?
IQ = Mental Age / Chronological Age x 100
What is the DSM 5 diagnostic criteria for intellectual disability?
- IQ between 65-75 (70+- 5)
- present before 18
- concurrent deficits in adaptive functioning, one or more areas
What are adaptive behaviour skills at infancy and early childhood?
- sensorimotor
- communication
- self help
- socialisation
What are adaptive behaviour skills at childhood and adolescence?
- academic skills for daily living
- reasoning and judgement within the environment
- social skills
What are adaptive behaviour skills at adulthood?
- vocational responsibilities (workplace)
- social responsibilities (family)
- behavioural performance
List the tests of intelligence for children
- Wechsler intelligence scale for children
- Wechsler preschool and primary scale of intelligence
- stanford-binet
- Kaufman assessment battery
- bayley scales of infant development
List adaptive behaviour tests for children
- Vineland adaptive behaviour scale
- scales of independent behaviour
- adaptive behaviour assessment system
List the 5 domains fo the Vineland
- communication
- daily living skills
- socialisation
- motor skills
- maladaptive behaviour
Describe someone with an IQ of 55-70
- 85% of people with ID
- typically not identified until elementary school years
- over representation of minority group members
- develop social and communication skills but may be moderate delay in expressing language
- with appropriate supports, as adults they usually live successfully in the community
Describe someone with an IQ of 40-54
- about 10% of persons with ID
- usually identified during preschool years
- applies to many people with Down syndrome
- benefit from vocational training and in adulthood can performed supervised
Describe someone with an IQ of 25-39
- about 3-4% of persons with ID
- often associated with organic causes
- usually identified at a young age due to missing developmental milestones
- age 13-15 have adaptive and academic abilities same as 4-6 year old
- may have mobility and health related problems
- need special assistance throughout their lives
Describe someone with an IQ below 20-25
- about 1-2% of persons with ID
- usually identified in infancy due to marked delays in development and biological anomalies
- learn only rudiments of communication - require extensive training to learn eating, grooming, toilet and dressing behaviours
- require lifelong care and assistance
Why do we use intelligence tests?
- to find education related disabilities
- determine eligibility for special education
- to determine effects from brain injury
- to obtain info used to develop interventions
- to determine how a child processes info
- to assess multiple factors in cognitive abilities
- to look closely at working memory
- to look closely at processing speed
What is the Flynn effect?
An increase in IQ over time in different cohorts
List some explanations for the Flynn effect
- improvement in education system
- improved nutrition
- better health conditions
- increased dissemination of information
- test items become scale
- demographic shifts
What does the WISC-IV cover
- full scale IQ
- verbal comprehension score
- perceptual reasoning score
- working memory score
- processing speed score
What subtests form verbal comprehension?
- similarities
- vocabulary
- comprehension
What SUPPLEMENTAL subtests form verbal comprehension?
- information
- word reasoning
What subtests form perceptual reasoning?
- block design
- picture concepts
- matrix reasoning
What SUPPLEMENTAL subtest forms perceptual reasoning?
Picture completion