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Definition
| a method of calculating reliability by repeating different but equivalent measures at two or more points in time |
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| validity demonstrated for a measure by showing that it is related to the measure of another concept |
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| validity demonstrated by ensuring that the full domain of a concept is measured |
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| a table showing the relationships among discrete measures |
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| a variable having only two categories that for certain analytical purposes can be treated as a quantitative variable |
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| validity asserted by arguing that a measure corresponds closely to the concept it is designed to measure |
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| a statistical technique useful in the construction of multi-item scales to measure abstract concepts |
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| a multi-item measure in which respondents are presented with increasingly difficult measures of approval for an attitude |
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| a test of the extent to which the scores of several items, each thought to measure the same concept, are the same. Results are displayed in a correlation matrix |
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| a measure for which a one-unit difference in scores is the same throughout the range of the measure |
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| a measure for which a one-unit difference in scores is the same throughout the range of the measure |
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| a multi-item measure in which the items are selected based on their ability to discriminate between those scoring high and those scoring low on the measure |
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| the process by which phenomena are observed systematically and represented by scores or numerals |
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| a measure for which different scores represent different, but not ordered, categories |
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| the rules by which a concept is measured and scores assigned |
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| a measure for which the scores represent ordered categories that are not necessarily equidistant from each other |
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| a measure for which the scores possess the full mathematical properties of the numbers assigned |
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| the extend to which a measure yields the same result on repeated trials |
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Definition
| a method of calculating reliability by comparing the result of two equivalent measures made at the same time |
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| a multi-item measure in which individual scores on a set of items are combined to form a summary measure |
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Definition
| a method of calculating reliability by repeating the same measure at two or more points in time |
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| the correspondence between a measure and the concept it is supposed to measure |
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