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17 Cards in this Set
- Front
- Back
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Reliability |
Measurements that reflect what you are trying to assess and are not affected by anything else |
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Measurement error/error variance |
Cumulative effect of such extraneous influences |
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Factors that undermine reliability (4) |
Low precision State of the participant State of the experimenter Variation in the environment |
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Techniques to improve reliability (4) |
care with research procedure, standardized research protocol, measure something important, aggregation |
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Spearman-Brown Formula |
The more error-filled your measurements are, the more of them you need |
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Psychometrics |
The technology of psychological measurement |
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Validity |
The degree to which a measurement actually reflects what one thinks or hopes it does |
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For a measurement to be valid it must be... |
reliable |
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A reliable measure is not necessarily |
valid |
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construct validation |
The process of testing the theory behind a construct such as intelligence or sociability |
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Gereralizability |
The distinction between reliability and validity is rather fuzzy |
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Cohort effect |
The tendency of a group of people living at a particular time to be different in some way from those who live earlier or later |
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Case method |
Closely studying a particular event or person in order to find out as much as possible |
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P-Level |
probability level |
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Type 1 Error |
Involves deciding that one variable has an effect on, or a relationship with, another variable, when it really does not |
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Type 2 Error |
Involves deciding that one variable does not have an effect on, or relationship with, another variable, when it really does |
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Correlation coefficient |
Used to describe the strength of either correlational or experimental results |
