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20 terms

RM Chapter 6

STUDY
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Alternate-form Reliability
When the correlation coefficient is again used to asses the reliability of the set of scores
Concurrent Validity
Correlates with outcomes happening at the same time. Subcategory of Criterion Validity
Convergent Validity
Correlates with other similar measures. Subcategory of Construct Validity
Criterion Validity
Correlates with appropriate outcomes
Discriminant Validity
Testing for distinctiveness between measures or manipulations of related but conceptually different traits or behaviors.
External Validity
Conclusions made about the extent to which a casual relationship holds across variations in persons, settings, treatments and outcomes
Face Validity
"Makes sense" or Common sense test.
Internal-consistency Reliability
Checks for interrelated items, similar responses, and making sure they tap from the same construct
Internal Validity
Whether the observed covariation between variables truly reflects a relationship between the variables.
Plausible Rival Hypothesis
A competing explanation for results
Predictive Validity
Measured at two different times to predict the future. Subcategory of Criterion Validity
Random Error
Inaccuracies occurring by chance
Reliability
Measures are consistent or stable
Systematic Error
Fluctuations that are slanted in a particular direction; bias
Test-retest Reliability
For stable characteristics and a good test, a person should get the same scores on different occasions.
Validity
Truth or accuracy, how well a measure assesses what is purports to measure
Reliability-Validity Rule
You can have reliability without validity but not validity without reliability
Content Validity
Adequate coverage of areas. Generating more ideas than needed, omitting those that are not accurate. Representing the ideas they are supposed to represent
Construct validity
Meaning fits goal. Operational definition is accurate.
Cronbach's Alpha
Used to measure the reliability of a psychometric test score for a sample of examinees.