Research Methods CH 8
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14 terms
Terms | Definitions |
|---|---|
 repeated measures designs | research designs in which each subject participates in all conditions of the experiment (i.e., measurement is repeated on the same subject). |
| sensitivity | refers to the likelihood in an experiment that the effect of an independent variable will be detected when that variable does, indeed, have an effect; sensitivity is increased to the extent that error variation is reduced (e.g., by holding variables constant rather than balancing them). |
| practice effects | changes that participants undergo with repeated testing. Practice effects are the summation of both position (familiarity with the task) and negative (boredom) factors associated with repeated measurement. |
| counterbalancing | a control technique for distributing (balancing) practice effects across the conditions of a repeated measures deign. How counterbalancing is accomplished depends on whether a complete or an incomplete repeated measures design is used. |
| Balancing the order of conditions in a repeated measures design _______ | averages practice effects across the conditions of the experiment |
| In the incomplete repeated measures design, the levels of the independent variable for each participant are perfectly confounded with the _______ | order in which the levels were presented |
| Practice effects in the incomplete repeated measures design are balanced by _______ | combining the results for all participants |
| Repeated measures designs are more sensitive than random groups designs because the systematic variation due to individual differences is _________ the statistical analyses. | eliminated from |
| The additional step needed when analyzing the results in a complete repeated design is to _______ | compute the mean score for each participant for each condition of the experiment |
| The problem of _____ occurs when the effects of the manipulation for a condition persist or carryover into the subsequent conditions in a repeated measures design. | differential transfer |
| There can be no confounding by individual differences variables in the repeated measures designs because _______ | the same participants are tested in all conditions of repeated measures designs |
| When a participant in an experiment that involves the complete repeated measures design develops expectations about which condition should occur next in the sequence, the methodological problem that occurs is called ______ | anticipation effects |
| Which concern lead researchers to balance practice effects in repeated measures designs? | Balancing allows researchers to control changes participants undergo with repeated testing in repeated measures designs |
| What are three of the reasons why researchers choose to use the repeated measures design? | they require fewer subjects, they are more convenient and efficient, they are needed when the experimental procedures require participants to compare two or more stimuli |
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