GRE (Graduate Record Examinations) Psychology Measurement and Methodology-Research Designs Study Material (Page 4 of 16)
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Characteristics of Measuring a Test: Usability and Factors Governing Method Selection for Data Collection
Usability
Another major characteristic of good test besides reliability and validity is the usability or practicability. Numerous practical factors should be considered while test preparation and selection.
- Test should be of a length that can be administered within stipulated time. Long tests provide high reliability and validity, however, too long or too short test may not be used practically in a classroom setting.
- Test should be easy to administer.
- Test should provide clear-c…
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Characteristics of Measuring a Test: Test Construction
Test Construction
Test construction involves three major steps of test standardization, reliability and validity.
Table 2: Summary of test construction
Test Characteristics | Highlights |
Standardization | Process of making uniform and objective testing & scoring procedures to obtain meaningful scores |
Reliability | Consistency of results |
Test-Retest Reliability | Compares scores from repeated testing of same participants with same test e. g. IQ test have high test-retest reliability |
Alternate Form Reliability | Compares scores from alternate forms of the test |
Split Half reliability | Compares scores from different parts of the test e. g. odd vs. even |
Inter-item Reliability | Scores degree to which different items measuring the same variable attain consistent results |
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