what did Francis Galton believe about intelligence
- considered intelligence an exceptional perceptual motor skill
- invented correlation co-efficient
what did Alfred Binet believe about intelligence
- devised a test to detect slow learners
- assumed reasoning and problem solving should be measured
- published the aptitude test in 1905
what is Binet’s method (mental health scale)
- devised a scale of mental age
- use averages mental age scores and chronological age
- a smart childs MA is higher than there CA
vice versa for a dull child. - IQ = (MA/CA) x 100
what is the Flynn Effect
- a quantitative commentary on modernity and human intelligence
- argues that these are not general increases in intelligence
- increasing test performance due to increasing aptitude for the types of thinking modern life requires.
- IQ test measure wrong things.
what is inter-rater reliability
- the degree of agreement between two or more examiners
what is a confidence interval
- a range of values around the obtained test score, includes the true value with a certain degree of confidence.
- % of 95 tells us that if calculated from 100 different samples, 95 of them would contain the true score.
what is face validity
something appears to work
what is factor analysis
- methods to determine how many factors are included in a construct and which task best represents them
what is predictive validity
the degree to which a test accurately predicts a criterion that will occur.
what is content validity
the extent a measure represents all facets of a construct
what is known-group validity
when a test can discriminate between 2 groups known to differ
what is criterion-related validity
how well a test measures the outcome is was designed for
what is construct validity
how well a set of indicators represents a concept that is not directly measures
