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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


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.


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.

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