Psychometrics: Test Validity and Reliability
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Questions and Answers

What is test validity?

  • The test is administered to a large sample
  • The test measures what it is supposed to measure (correct)
  • The test reflects a theory with empirical evidence
  • The test gives comparable scores to other tests

What does content validity ensure?

All subtests and items measure what they are designed to measure

What is criterion-related validity?

That the test can adequately predict performance on other tasks that most people agree requires intelligence.

What is concurrent validity?

<p>The test gives comparable scores to other tests known to be valid.</p> Signup and view all the answers

Define construct validity.

<p>The test provides a good reflection of the theory on which it is based and there is empirical evidence supporting the theory.</p> Signup and view all the answers

What is test reliability?

<p>Test consistently measures what it is supposed to each time it is given.</p> Signup and view all the answers

Explain test-retest reliability.

<p>Given the intelligence test to the same group of people on two different occasions and then comparing the two sets of scores.</p> Signup and view all the answers

What does parallel-forms reliability entail?

<p>Giving a different version of the same test instead of using the exact same test again.</p> Signup and view all the answers

What is split-half reliability?

<p>Dividing the original test in half.</p> Signup and view all the answers

Define internal consistency.

<p>Correlations between different items in the test to determine consistency.</p> Signup and view all the answers

What is inter-rater reliability?

<p>Checking that different test administrators get similar results.</p> Signup and view all the answers

What is standardisation and norms in testing?

<p>Administered to a large sample representative of the population with similar conditions and instructions for all tests.</p> Signup and view all the answers

Flashcards

Test Validity

The test measures what it is supposed to measure.

Content Validity

Ensures all subtests and items measure their intended constructs.

Criterion-Related Validity

The test can predict performance on related tasks.

Concurrent Validity

The test gives comparable scores to other established, valid tests.

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Construct Validity

The test reflects the underlying theory and empirical evidence.

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Test Reliability

The test consistently measures what it's supposed to each time.

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Test-Retest Reliability

Give the same test to the same people on two occasions and compare scores.

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Parallel-Forms Reliability

Giving a different version of the same test instead of repeating the exact one.

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Split-Half Reliability

Dividing the original test in half and comparing the scores of each half.

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Internal Consistency

Correlations between different items in the test indicate consistency.

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Inter-Rater Reliability

Different administrators get similar results from the same test.

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Standardisation and Norms

Administering under same conditions to a representative sample.

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Study Notes

Test Validity

  • Refers to the extent a test measures what it is supposed to measure.
  • Content validity ensures all subtests and items address the specific material intended (e.g., a chapter test only covers that chapter's material).
  • Criterion-related validity indicates a test's ability to predict performance on tasks that require intelligence, as agreed upon by most people.
  • Concurrent validity assesses if a test yields scores that are comparable to other established valid tests.
  • Construct validity demonstrates that a test accurately reflects the theoretical construct it is based on, supported by empirical evidence.

Test Reliability

  • Test reliability indicates that a test consistently measures what it aims to measure across different administrations.
  • Test-retest reliability involves administering the same test to the same group on different occasions and comparing scores, noting potential practice effects.
  • Parallel-forms reliability entails using a different version of the same test to measure consistency.
  • Split-half reliability is determined by dividing the test into two halves and ensuring their scores correlate.
  • Internal consistency checks the correlation between different items of the same test to determine reliability.
  • Inter-rater reliability assesses the agreement of results between different test administrators.

Standardisation and Norms

  • Standardised tests are administered to a large and representative sample of the population under similar conditions and instructions, ensuring fairness.
  • Norms provide mean scores of specific groups (ideally matched by age, background, etc.), allowing for valid comparisons among test takers.
  • Cultural bias can lead to lower scores for individuals from cultures different from the one on which the test was originally standardised.

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Description

This quiz explores key concepts in psychometrics, focusing on the validity and reliability of tests. Learn about different types of validity, such as content, criterion-related, and construct validity, as well as various reliability measures. Perfect for students studying psychology or assessment methods.

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