Psychometric concepts including reliability, validity, standardization, and intelligence testing history and debates.
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- What does reliability mean in psychological testing?
- The consistency or reproducibility of test results over time and across different conditions.
- What is test-retest reliability?
- The correlation of test scores when the same test is administered to the same person at two different times.
- What is internal consistency reliability?
- The degree to which all items within a test measure the same construct or trait.
- What is Cronbach's alpha?
- A statistic that measures internal consistency, with values ranging from 0 to 1, where higher values indicate greater consistency.
- What is inter-rater reliability?
- The degree of agreement between two or more independent raters or observers scoring the same responses.
- What does validity mean in psychological testing?
- Whether a test actually measures what it claims to measure.
- What is construct validity?
- The extent to which a test measures the theoretical construct or trait it is designed to measure.
- What is content validity?
- The degree to which test items adequately sample the domain or content area being measured.
- What is criterion-related validity?
- The correlation between test scores and an external criterion that measures the outcome the test is intended to predict.
- What is predictive validity?
- The ability of a test to predict future performance or outcomes on a related measure.
- What is concurrent validity?
- The correlation between test scores and a criterion measure that is assessed at roughly the same time.
- What is a norm or norm group?
- A reference group whose test scores establish the distribution against which an individual's score is compared.
- What does standardization mean in test development?
- The process of administering a test under uniform conditions with consistent procedures, instructions, and scoring.
- What is a standard score?
- A transformed score that indicates how far a raw score deviates from the mean in terms of standard deviations, such as a z-score.
- What is the Flynn effect?
- The consistent rise in average IQ scores across generations, attributed to improved nutrition, education, and environmental factors.