Chapter 12 - How intelligence tests are used Flashcards
Stanford-Binet Test
used to compute overall measure of IQ, assess fluid reasoning, knowledge, quantitative reasoning, visual-spatial processing, working memory, ability to compare verbal and non-verbal performance
Wechsler Test
contains measures of verbal and performance intelligence
> Wechsler Preschool & Primary Scale of Intelligence (3-7 years),
> Wechsler Intelligence Scale for Children (7-16 yrs)
> Wechsler Adult Intelligence Scale (WAIS - 16+ yrs)
Woodcock-Johnson III Tests of Cognitive Abilities
used to give an overall score of general intelligence (IQ), looks at working memory and executive functioning skills
psychometric test approach
tests are based on findings of factor-analytic studies, looked at various psychometric properties
> tests from that approach Wechsler & Raven’s Matrices
cognitive psychology approach
tests from this category highlight biological and physiological processes and aspects to intelligence
Brain Size and Intelligence
generally there IS a positive positive correlation of brain volume and intelligence
> correlation is also higher for females than males!
> correlation between brain size and IQ = .33
> using MRI to examine this idea
Elementary Cognitive tasks (ECTs)
simple tasks used to measure different cognitive processes (understanding stimuli, stimuli discrimination, choice, visual search, retrieval of information from short-term and long-term memory)
> Person’s intelligence measured through ECTs, based on their response times to different tasks (understanding and identifying stimuli, memorizing things)
simultaneous processing
allows individuals to explore and discover relationships between components of information, integrating information leading to spatial awareness
(occipital-parietal region of the brain)
Successive processing
enables to put information into serial order;
(fronto-temporal regions)
Cognitive Assessment System (CAS) (Das & Naglieri)
IQ test
> assesses how knowledge is organized and accessed in the memory system
> assesses how various intellectual tasks are achieved
> test predicts achievement and looks for discrepancies between ability and achievement
PASS (CAS)
system to measure IQ (planning, attention, simultaneous, successive)
Kaufman’s ability test
using this test; possible to make recommendations for children on cognitive processes rather than cultural knowledge
> measures 3 aspects of intelligence
- achievement
- Simultaneous processing
- sequential processing scale
Flynn effect
One of the most well-known fluctuations in intelligence testing history - continued year-on-year rise of intelligence test scores in all parts of the world
Five main environmental areas to explain the Flynn effect
- Length of schooling (not a good explanation)
- Test-taking sophistication (does not fully explain Flynn effect)
- Child-rearing practices and Head Start (cannot explain the Flynn effect)
- Cultural and technological age
- Nutrition and IQ
Nutrition Hypothesis (Flynn effect)
nutrition as part of a package in which increased intelligence is part of a nurturing environment that includes increased height and lifespan, improved health, decreased rate of infant disease and better vitamin and mineral nutrition