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| careful and deliberate observations of the real world for the puposes of describing objects and events in terms of the attributes composing the variable |
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| process of specifying what we mean when we use particular terms (also different aspects of concept, clarifies terms) |
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| sign of the presence or absence of the concept we're studying (do you go to church? yes/no) |
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| A specifiable aspect of the concept (can you name all the gospels?) |
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| common sense or dictionary definition |
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| level of measurement describing a variable with attributes we can rank order along some dimension, defines for the sake of measurement |
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| level of measurement describing a variable whose attribute are rank ordered and have equal distances between adjacent attributes (IQ) |
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| level of measurement describing a variable with attributes that have all the qualities of nominal, ordinal, and interval measure but also have a "true zero" point |
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| same data collected each time |
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| measures reliability, test, test again, then compare |
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| all investigators on a project must measure the variables in the same way |
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| accurately reflects the concept it's supposed to measure |
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| makes common sense, logical |
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| Criterion/Construct Validity |
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| matches hypothesis or theory |
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