Psychometrics: Reliability and Validity Quiz
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Questions and Answers

Which type of validity is concerned with the extent to which a test measures a specific psychological construct, such as intelligence or anxiety?

  • Content Validity
  • Construct Validity (correct)
  • Predictive Validity
  • Face Validity

What is the primary purpose of assessing the reliability of a test?

  • To evaluate the effectiveness of the test in predicting future performance
  • To identify potential biases in the test items
  • To ensure that the test is measuring what it is intended to measure
  • To determine the extent to which test scores are consistent across different administrations (correct)

A test with high internal consistency reliability means that:

  • The items on the test are all measuring the same underlying construct (correct)
  • The test is effective in predicting future performance
  • The test effectively differentiates between individuals with different levels of the trait being measured
  • The test scores are highly correlated with an external criterion measure

Which of the following is a method for assessing the internal consistency reliability of a test?

<p>Split-half reliability (A)</p> Signup and view all the answers

What does the term 'norm' refer to in the context of test scores?

<p>A set of scores that represent a typical or average performance on a test (C)</p> Signup and view all the answers

A test that compares an individual's performance to a set of standardized scores from a representative group is a ______________ test.

<p>Norm-referenced (B)</p> Signup and view all the answers

What is the main purpose of the Kuder-Richardson-20 (KR-20) formula?

<p>To estimate the internal consistency reliability of a test (D)</p> Signup and view all the answers

Which of the following is NOT a source of error in measurement?

<p>Test-retest reliability (A)</p> Signup and view all the answers

The consistency of scores obtained on two different administrations of the same test at different times is referred to as

<p>Test-retest reliability (C)</p> Signup and view all the answers

Which type of reliability is assessed by correlating the scores on two equivalent forms of a test?

<p>Parallel forms reliability (D)</p> Signup and view all the answers

When a test is divided into two halves and the scores on the two halves are correlated, this is a measure of

<p>Internal consistency reliability (A)</p> Signup and view all the answers

What does Cronbach's Alpha measure?

<p>The internal consistency of a test (D)</p> Signup and view all the answers

Item analysis is the process of

<p>Reviewing each test item's statistical properties and contributions to the test (A)</p> Signup and view all the answers

What does item difficulty refer to?

<p>The proportion of test takers who answer the item correctly (D)</p> Signup and view all the answers

What does item discrimination refer to?

<p>How well an item differentiates between high and low scorers on the test (B)</p> Signup and view all the answers

Which table in the study guide provides an overview of test score theory concepts?

<p>Table 5.1 (C)</p> Signup and view all the answers

What is the standard error of estimate?

<p>A measure of how accurate test scores are at predicting a criterion. (A)</p> Signup and view all the answers

Which of the following best describes a test?

<p>A structured assessment to determine an individual's aptitude. (C)</p> Signup and view all the answers

What are the three levels of Test Purchaser competencies?

<p>Beginner, Intermediate, Advanced. (C)</p> Signup and view all the answers

Which type of validity refers to how well a test correlates with a criterion measure that is obtained at the same time?

<p>Concurrent validity. (C)</p> Signup and view all the answers

Which of the following is NOT a type of test mentioned in the study guide?

<p>Performance-based test. (D)</p> Signup and view all the answers

Which type of validity addresses whether a test measures the intended theoretical construct?

<p>Construct validity. (A)</p> Signup and view all the answers

What type of validity refers to the extent to which a test correlates with other measures of the same construct?

<p>Convergent validity. (D)</p> Signup and view all the answers

What is criterion validity?

<p>The extent to which a test predicts an outcome criterion measure. (D)</p> Signup and view all the answers

Flashcards

Standard Error of Estimate

The standard deviation of the error distribution; It indicates how much scores are spread around the regression line.

Standard Error of Measurement

A measure of how consistent test scores are over repeated administrations.

Test-retest reliability

A method for assessing test reliability by administering the same test twice to the same group of individuals and calculating the correlation coefficient between the scores.

Construct Validity

A key step in test development that assesses whether a test measures the intended theoretical construct.

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Convergent Validity

A type of validity that refers to the extent to which a test correlates with other measures of the same construct.

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Concurrent Validity

A type of validity that indicates how well a test correlates with a criterion measure obtained at the same time.

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Content Validity

The degree to which the content of a test accurately represents the content domain being assessed.

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Predictive Validity

The ability of a test to predict a future outcome or criterion measure.

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Validity

The extent to which a test measures what it is supposed to measure.

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Discriminant Validity

The extent to which a test does NOT correlate with measures of unrelated constructs.

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Face Validity

A subjective assessment of whether a test appears to measure what it is supposed to.

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Testing Situation

A source of error in measurement that can occur due to factors such as the testing environment.

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Kuder-Richardson-20 (KR-20)

A formula used to estimate the internal consistency reliability of a test.

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Spearman-Brown Formula

A formula used to estimate the impact on reliability of shortening or lengthening a test.

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Item Response Theory (IRT)

A framework for analyzing test items in relation to a test-taker's ability level.

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Norm

Data or scores against which an individual's score is compared.

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Norm-Referenced Test

A test that compares an individual's score to the scores of a norm group.

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Criterion-Based Test

A test that compares an individual's score to an established standard of performance.

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Domain Sampling Model

A framework that assumes that test items are sampled from a larger domain of possible items.

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Parallel Forms Reliability

The degree to which two forms of a test measure the same construct.

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Split-Half Reliability

A test of reliability in which a test is split into two and the results from each half are correlated.

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Study Notes

Test Reliability and Validity

  • Standard error of estimate: An estimate of the variability of a score on a test.
  • Standard error of measurement: The standard deviation of observed scores around the true score.
  • Test reliability: Established by administering the same test twice to the same group and calculating the correlation coefficient between scores.
  • Test: A standardized procedure for observing behavior.
  • Types of tests: Norm-referenced, criterion-based, and standardized tests.
  • Test purchaser competencies: General, specific, and specialized.
  • Construct validity: Addresses whether a test measures the intended theoretical construct.

Types of Validity

  • Convergent validity: Measures how well a test correlates with other measures of the same construct.
  • Predictive validity: The extent to which a test predicts an outcome criterion measure.
  • Concurrent validity: How well a test correlates with a criterion measure obtained at the same time.
  • Discriminant validity: The extent to which a test does not correlate with measures of unrelated constructs.
  • Face validity: A subjective assessment of whether a test appears to measure what it is supposed to measure.
  • Content validity: The degree to which the test content represents the content domain of interest.

Reliability Concepts

  • Sources of measurement error: The testing situation, test taker variables, and item selection can all contribute to measurement error.
  • Internal consistency reliability (KR-20): Evaluated using the Kuder-Richardson-20 formula to estimate the internal consistency of a test.
  • Spearman-Brown formula: Used to estimate the impact on reliability of shortening or lengthening a test.
  • Item response theory (IRT): Framework for analyzing test items in relation to a test-taker's ability level.
  • Classical test theory: Traditional approach to test construction, focusing on the total test score.
  • Item analysis: The process of reviewing each item's statistical properties and their contributions to the test.
  • Item difficulty: The proportion of test-takers who answer an item correctly..
  • Item discrimination: How well an item differentiates between high and low scorers on the test.

Test Types and Concepts

  • Norm: Data or scores against which an individual's score is compared.
  • Norm-referenced test: Compares an individual's score to a norm group's scores.
  • Criterion-based test: Compares an individual's score to an established standard of performance.
  • Domain sampling model: Assumes test items are sampled from a larger domain of possible items.
  • Test-retest reliability: Assessed using test-retest methods, measuring consistency of scores over time, and parallel forms reliability is when different forms of the same test are used.
  • Split-half reliability: A test split into two halves to assess reliability.
  • Cronbach's alpha: Measures the internal consistency of a test.
  • Different types of reliability measures: Split half, test retest, parallel forms

Study Guide Summary

  • A study guide for understanding test construction, reliability and validity concepts.
  • The guide covers multiple-choice questions related to key concepts.
  • A detailed answer key is included.

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Description

Test your understanding of the concepts of reliability and validity in psychometrics. This quiz covers standard error estimates, types of tests, and various forms of validity such as convergent and predictive validity. Perfect for students studying psychology or assessment methods.

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