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General intelligence
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A general intelligence factor that, according to Spearman, underlies specific mental abilities and is therefore measured by every task on an intelligence test
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Factor analysis
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Statistac procedure that identifies clusters of related items (called factors) on a test; used to identify different dimensions of performance that underlie a person's total score
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Mental age
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Binet
chronological age that most typically corresponds to a given level of performance |
Stanford-Binet
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American revision (by Terman at Stanford University) of Binet's origional intelligence test
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Intelligence Quotient (IQ)
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Ration of mental age (ma) to chronological age (ca) multiplied by 100...assigned to a score of 100
(IQ=ma/ca x 100) |
Achievement test
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Assess what a person has learned
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Aptitude test
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Predict a persons future performance.
aptitude is the capacity to learn |
Wechsler Adult Intelligence Scale (WAIS)
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Most widely used
has verbal and performance subtests |
Standardization
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Defining meaningful scores by comparison with the performance of a pretested group
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Reliability
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Extent to which a test yields consistent results
assessed by the consistency of scores on two halves of the test or by retesting |
Validity
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Extent to which a test measures or predicts what it is supposed to
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Content validity
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Extent to which a test samples the behavior that is of interest
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Predictive validity
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Success with which a test predicts the behavior that it is supposed to
assessed by computing the correlation between test scores and the criterion behavior (also called criterion-related validity) |
Cohort
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Group of people from a given time period
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Crystallized intelligence
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Builds over time
accumulated knowledge ad verbal skills |