Podcast
Questions and Answers
What term refers to the degree to which all the items on a test measure the same construct?
What term refers to the degree to which all the items on a test measure the same construct?
- Test-retest reliability
- Inter-rater reliability
- Inter-item reliability (correct)
- Alternate form reliability
What is the formula for calculating the split-half coefficient?
What is the formula for calculating the split-half coefficient?
- Cohen's kappa
- Spearman-rho
- Cronbach's alpha
- Spearman-brown (correct)
Which method is used for more continuous, ordinal measures?
Which method is used for more continuous, ordinal measures?
- Spearman-brown
- Cronbach's alpha (correct)
- Spearman-rho
- Cohen's kappa
Which type of validity refers to the extent to which the result of a particular test or measurement corresponds to those of a previously established measurement for the same construct?
Which type of validity refers to the extent to which the result of a particular test or measurement corresponds to those of a previously established measurement for the same construct?
When a measure agrees with other measurements that assess the same construct, it is referred to as:
When a measure agrees with other measurements that assess the same construct, it is referred to as:
Which term refers to how accurately an assessment or measurement tool taps into the various aspects of the specific construct in question?
Which term refers to how accurately an assessment or measurement tool taps into the various aspects of the specific construct in question?
What is the process of splitting the questions on a test into two halves and treating one half as the test and the other half as the retest?
What is the process of splitting the questions on a test into two halves and treating one half as the test and the other half as the retest?
Which type of validity is determined by calculating the correlation between the results of the assessment and the subsequent targeted behavior?
Which type of validity is determined by calculating the correlation between the results of the assessment and the subsequent targeted behavior?
What type of validity involves measurement that are administered at the same time?
What type of validity involves measurement that are administered at the same time?
What does a coefficient of stability between 0.7 and 0.6 mean?
What does a coefficient of stability between 0.7 and 0.6 mean?
Which type of reliability calculates the reliability of a test for nonobjective or not dichotomous items?
Which type of reliability calculates the reliability of a test for nonobjective or not dichotomous items?
Which type of validity is heavily influenced by the reviewer's personal experience?
Which type of validity is heavily influenced by the reviewer's personal experience?
Which type of reliability is closely related to the split-half reliability?
Which type of reliability is closely related to the split-half reliability?
Which of the following is NOT a specific thing that can improve reliability?
Which of the following is NOT a specific thing that can improve reliability?
Concurrent and predictive validity are components of which type of validity?
Concurrent and predictive validity are components of which type of validity?
A measurement has _____ when its items cover all aspects of the construct being measured.
A measurement has _____ when its items cover all aspects of the construct being measured.
Which method is used when the rating is nominal and discrete?
Which method is used when the rating is nominal and discrete?
What refers to the increases in test results when a test is taken two or more times?
What refers to the increases in test results when a test is taken two or more times?
Which term refers to the degree to which raters are consistent in their observations and scoring when multiple people score the test results?
Which term refers to the degree to which raters are consistent in their observations and scoring when multiple people score the test results?
What factor could make an instrument less reliable when conducting psychological assessments?
What factor could make an instrument less reliable when conducting psychological assessments?
In developing measurement tools like intelligence tests, surveys, and self-report assessments, which aspect is crucial?
In developing measurement tools like intelligence tests, surveys, and self-report assessments, which aspect is crucial?
Which type of reliability measures both temporal stability and consistency of responses to different item samples?
Which type of reliability measures both temporal stability and consistency of responses to different item samples?
What is the aspect that reflects the extent to which a test measures what it is supposed to measure and not some unrelated construct?
What is the aspect that reflects the extent to which a test measures what it is supposed to measure and not some unrelated construct?
What aspect of measurement is often determined by consulting experts knowledgeable about the construct being measured?
What aspect of measurement is often determined by consulting experts knowledgeable about the construct being measured?
Which type of reliability refers to the consistency between different raters or observers evaluating the same behavior or performance?
Which type of reliability refers to the consistency between different raters or observers evaluating the same behavior or performance?
A reliability coefficient between 0.8 and 0.9 indicates what level of reliability?
A reliability coefficient between 0.8 and 0.9 indicates what level of reliability?
Which statistical method is commonly used to assess the internal consistency of a measure or test?
Which statistical method is commonly used to assess the internal consistency of a measure or test?
What does the term "reliability" refer to in the context of psychological measurement?
What does the term "reliability" refer to in the context of psychological measurement?
Which type of reliability is closely related to the split-half reliability method?
Which type of reliability is closely related to the split-half reliability method?
Which of the following is a potential threat to the construct validity of a measure?
Which of the following is a potential threat to the construct validity of a measure?
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Study Notes
Measurement Terms and Concepts
- Construct validity refers to the degree to which all items on a test measure the same construct.
- The split-half coefficient is calculated by correlating the scores from two halves of a test.
- Spearman-Brown formula is often used in split-half reliability analysis.
- For continuous, ordinal measures, the test-retest method is preferred.
Types of Validity
- Criterion-related validity assesses the extent to which a test corresponds to an established measurement for the same construct.
- Convergent validity occurs when a measurement agrees with others assessing the same construct.
- Content validity evaluates how accurately a tool taps into all aspects of the specific construct.
- Predictive validity involves the correlation between assessment results and subsequent targeted behaviors.
- Concurrent validity assesses measurements administered at the same time.
Reliability and Consistency
- A coefficient of stability between 0.6 and 0.7 indicates moderate reliability of a measurement.
- Kuder-Richardson formula is used for nonobjective or not dichotomous items to calculate reliability.
- Subjective validity is influenced by the reviewer's personal experience, impacting validity assessments.
- Internal consistency reliability is closely related to split-half reliability.
Improving Reliability
- Strategies to improve reliability include clear instructions, consistent testing conditions, and thorough training for raters.
- Concurrent and predictive validity are components of criterion-related validity.
- A measurement achieves representational validity when its items cover all aspects of the construct being measured.
Rater Consistency and Reliability Threats
- Test-retest reliability refers to increases in test results when taken multiple times.
- Inter-rater reliability indicates the degree to which different raters are consistent in their observations and scoring.
- Factors such as instruÂments being poorly designed can decrease instrument reliability in psychological assessments.
Development and Expert Consultation
- Developing measurement tools like intelligence tests and surveys requires attention to construct validity and content validity.
- Internal consistency reliability measures the temporal stability and consistency of responses across different item samples.
- Construct validity reflects the extent to which a test measures what it intends without addressing unrelated constructs.
Rater Agreement and Reliability Coefficients
- Expert consultation is key in determining content validity for measurements.
- Intrarater reliability assesses consistency between different raters evaluating the same performance or behavior.
- A reliability coefficient between 0.8 and 0.9 indicates high reliability in a measurement.
Statistical Assessments and Definitions
- Cronbach's alpha is a common statistical method for assessing the internal consistency of a measure or test.
- Reliability, in psychological measurement, refers to the consistent and stable application of a measurement tool.
- Intraclass correlation is closely related to the split-half reliability method.
- Potential threats to construct validity may include sampling bias or construct misalignment during test development.
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