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21 Cards in this Set
- Front
- Back
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Independent Variable |
Those variables that the researcher can change or manipulate |
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Dependent Variable |
What the experimenter actually measures |
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Confounding Variable |
a variable that obscures the effects of another |
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Operational Definition |
describes the operations or activities researchers uses to measure or manipulate. |
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Nominal Scale |
Refers to identity. Categories. Country of birth , sex, political affiliation |
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Ordinal Scale |
Put in order. first, second, third. class rank, letter grade, birth order |
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Interval Scale |
Psychological Measurement, not a real zero |
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Ratio Scale |
Real or true zero, physical measurement, pounds, temp, weight, speed |
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Discrete Variables |
usually consists of the whole units or categories |
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Continuous Variables |
usually fall along a continuum and allow for fractional amounts. |
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Aptitude Test |
measures and individuals potential to do something |
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Achievement Test |
measures an individuals competence |
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Test/retest Reliability |
establishing reliability by repeating the same test on a second occasion |
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Alternate- Forms Reliability |
Alternate forms that are different but equivalent tests are given on different occasions to see how an individual scores. |
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Split-Half Reliability |
splitting the terms on the test in two equivalent halves and correlating the scores on one half of the items with the scores on the other |
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Interrater- Reliability |
a measure of consistency between the observations made by two or more raters or judges |
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Validity |
Whether a measure is truthful or genuine |
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Content Validity |
extent to which a measuring instrument covers a representative sample of the domain of behaviors to be measured. |
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Face Validity |
refers to the extent that a measure instrument appears valid on its surface |
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Criterion Validity |
the extent to which the measuring instrument accurately predicts behavior in the future. |
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Construct Validity |
measures the theoretical construct or trait that it is suppose to measure |
