Validity & Reliability Flashcards
What is validity in psychometrics?
Validity refers to whether a test measures what it claims to measure.
Validity refers to if a test
Can measure what it claims it does assess.
What are the main types of validity in psychometrics?
Content validity, construct validity, criterion-related validity, and face validity.
What is content validity?
The extent to which a test represents all facets of the concept it is intended to measure.
The extent to which a test includes all parts
Of what it aims to measure as a whole.
What is construct validity?
The degree to which a test truly measures the theoretical construct it purports to measure.
What is the difference between convergent and divergent validity?
Convergent validity shows high correlation with measures of the same construct, while divergent validity shows low correlation with measures of different constructs.
What is criterion-related validity?
The effectiveness of a test in predicting an outcome (criterion), including predictive and concurrent validity.
What is face validity?
The extent to which a test appears, on the surface, to measure what it claims.
What is reliability in psychometrics?
Reliability refers to the consistency of a test’s results over time, items, or different raters.
What are the main types of reliability?
Test-retest reliability, inter-rater reliability, internal consistency, and parallel-forms reliability.
What is test-retest reliability?
The stability of test scores over time when administered to the same group under similar conditions.
What is inter-rater reliability?
The agreement among different raters or observers evaluating the same phenomenon.
What is internal consistency?
The extent to which items on a test measure the same construct, often assessed with Cronbach’s Alpha or split-half reliability.
What is parallel-forms reliability?
The consistency of results between two equivalent versions of a test.
What are some additional criteria for evaluating psychometric tools?
Fairness and bias, practicality, standardisation, norms, usability, and responsiveness.
Why is fairness important in psychometrics?
To ensure the test does not disadvantage certain groups based on race, gender, culture, or other factors.
What is standardisation in psychometrics?
Ensuring the test is administered and scored in a consistent manner to all participants.
What are norms in psychometrics?
Representative benchmarks or reference groups used to interpret individual scores meaningfully.
What is responsiveness in psychometric testing?
The ability of a test to detect meaningful changes over time in dynamic constructs.
