Term
| Measure Reliability vs Measure Validity |
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Definition
| Validity is measured AFTER Reliability. A variable may have high reliability but low validity. EX- head circumference and IQ |
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Term
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Definition
| Does it look like a good measure? Often assessed by asking experts. |
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Term
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Definition
| Does it include all the important components of the construct? EX- IQ is made up of reasoning, planning, problem solving, quick learning. |
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Term
Criterion Validity
or
Empirical Measure |
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Definition
| Evaluates how the measure is related to a concrete outcome that it should be related to. Use correlation to evaluate. |
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Term
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Definition
| Do scores on a measure discriminate among a set of groups who's behavior is already understood? |
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Term
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Definition
| The idea that the measure should correlate more strongly with other measures of the same construct. |
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Term
Discriminate Validity
or
Divergent Validity |
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Definition
| The measure should correlate less strongly with measures of other distinct constructs. |
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Term
| Convergent and Discriminate Validities |
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Definition
| Does the pattern make sense? Usually evaluated together to look for PATTERNS. |
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Term
| Can a measure be VALID but not RELIABLE? |
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Definition
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Term
| Can a measure be RELIABLE but not VALID? |
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Definition
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