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17 Cards in this Set
- Front
- Back
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History (Threats to Internal Validity)
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Specific event other than treatment
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Maturation (Threats to Internal Validity)
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Age or fatigue
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Testing (Threats to Internal Validity)
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Pre‐test affects post‐test
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Instrumentation (Threats to Internal Validity)
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Calibration changes
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Regression to the mean (Threats to Internal Validity)
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Extreme scores move closer to mean
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Biased selection of subjects (Threats to Internal Validity)
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Lack of equivalence amongst groups
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Mortality/attrition (Threats to Internal Validity)
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Differential loss of subjects
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External Validity
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the extent to which the results can be generalized beyond the conditions of the research setting and sample.
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Reactive Testing (Threats to External Validity)
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Pre‐test affects reaction to treatment
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Interaction between biased sample and IV (Threats to External Validity)
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Effects apply on to unique group tested
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Reactive effects of research setting (Threats to External Validity)
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Participants react to artificiality or knowledge that they are subjects
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Multiple Treatment Interference (Threats to External Validity)
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One treatment changes reactions to another treatment
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Validity of a measure
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extent to which your dependent variable measures what you intended it to measure.
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Face validity (measurement validity)
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Appearance
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Content validity (measurement validity)
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Does it sample the relevant info?
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Criterion‐related validity (measurement validity)
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Can it be used to infer another score?
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Construct validity (measurement validity)
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How well does it measure the construct?
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