validity of measurement
TRANSCRIPT
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VALIDITYMEAOFSUREMENT
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WHATISVALIDITYOFSURE
MEAMENT?
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VALIDITY OFMEASUREMENT
- refers to the extent to which the measuring instrument measures what it is supposed to measure.
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VALIDITY OFMEASUREMENT
“Does the measuring instrument measure the characteristics, traits, or whatever, for which it is supposed to measure?”
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APPROACHES USED TO DETERMINE THE VALIDITY
OF MEASUREMENT
1. Logical Analysis2. Empirical Analysis
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LOGICAL ANALYSIS
- focuses on the content of the test or measuring instrument.
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EXAMPLE:Measuring the Students’
Learning InterestINDICATORS
Coming to school on timeDoing his assignment everydayAchieving high scores in the testsActive class participation
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EMPIRICAL ANALYSIS
- uses criterion measurement.
“criteria-based”
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EXAMPLE:Measuring the Students’ Academic Performance
CRITERIAAchievement test resultsSubmission of projects/assignments
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A test is not valid if not properly used for a particular purpose and for a particular group.
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TYPESITYVALIDOF
SUREMEAOF
MENT
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1. Content Validity2. Construct Validity3. Concurrent Validity4. Predictive Validity
TYPES:
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- the degree to which a test measures an intended content area.
- Includes FACE and SAMPLING VALIDITY.
CONTENT VALIDITY
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-concerned with whether the test measures the intended content area.
-Determined by a review of the items.
FACE VALIDITY
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- concerned with how well the test samples the total content area.
- Not everything can be covered, so items need to be sampled from all of the domains.
SAMPLING VALIDITY
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- the degree to which a test measures an intended hypothetical construct.
CONSTRUCT VALIDITY
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CONCURRENT VALIDITY
- the degree to which the scores on another already established test administered at the same time or to some other valid criterion available at the same time.
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CONCURRENT VALIDITY
1. Relationship Method2. Discrimination Method
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RELATIONSHIP METHOD
- determines the relationship on the test and scores on other established test.
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DISCRIMINATION METHOD
- determines whether test scores can be used to discriminate between persons who posses a certain characteristic and those who do not, or those who posses it to a greater degree.
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PREDICTIVE VALIDITY
- the degree to which a test can predict how well and individual will do in a future situation.