Psychometric Principles & Intelligence Tests 5.10

psychometric

the scientific study of the measurement of human abilities, attitudes, and traits

intelligence tests

Standardized assessments with uniform testing procedure to assess human ability to learn or understand or to deal with new or trying situations

test reliability

the extent to which a test yields consistent results overtime

split-half method

checking the reliability by comparing both halves of the test to compare performance

validity

The ability of a test to measure what it is intended to measure

content validity

the extent to which a test samples the behavior that is of interest

construct validity

how well the variables in a study are measured or manipulated

criterion validity

how well a measure correlates with other outside measures

predictive validity

the extent to which a score on a scale or test predicts scores on some criterion measure

bell curve

more than 2 standard deviations below mean \= intellectual disability, more than 2 standard deviations above mean \= gifted, 15 standard deviation