Term
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Definition
| Designs that conatin two or more independent variables that are completely crossed |
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Term
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Definition
| One and only one independent variable |
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Term
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Definition
| only one independent variable and his variable has only two levels |
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Term
| One-way, multiple-groups design |
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Definition
| only a single independent variable which takes on three or more levels |
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Term
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Definition
| Simple, straightforward effects of independent variables in factorial studies |
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Term
| Ordinal (or spreading) interaction |
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Definition
| When an efect exists at one level of a second independent variable but is weakter or nonexistent at a different level of the second independent variable |
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Term
| Disordinal (or crossover) interaction |
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Definition
| Occurs (1) when there are no main effects of either independent variable and (2) when the effects of each independent variable are opposite at different levels of the other independent variable |
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Term
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Definition
| when results of a factorial study are represented in line graphs, an interaction will always show up in the form of nonparallel lines. |
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Term
| Simple effets tests (a.k.a. simple main effects tests) |
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Definition
| Typically very simple statistical fests |
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Term
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Definition
| designs in which each participant serves in one and only one condition of an experiment |
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Term
| Within-subjects designs (or repeated measures designs) |
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Definition
| Each participant serves in more than one (perhaps all) of the conditions of a study |
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Term
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Definition
| occur when the simple passage of time begins to take its toll on people's responses |
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Term
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Definition
| Occur when people's responses to one stimulus in a study directly influence their responses to a second stimulus |
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Term
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Definition
| Occur when a question takes on a different meaning when it follows one question than when it follows another |
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Term
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Definition
| When participant's experience with one task makes it easier for them to perform a different task that comes along later |
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Term
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Definition
| When performing one task disrupts people's performance on a second task |
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Term
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Definition
| Mehtod of control whereby the researcher varies the order in which participants experience the different conditions of a withing-subjects study |
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Term
| complete counterbalancing |
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Definition
| Presenting every possible order of all their experimental treatment conditions |
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Term
| Incomplete counterbalancing |
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Definition
1.Reverse counterbalancing
2.Partial counterbalancing |
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Term
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Definition
| Generate a single order (either a meaningful order or a random order), and then they reverse it |
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Term
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Definition
| Choosing a limited number of orders (say ten or 12) at random from the pool of all possible orders |
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Term
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Definition
| Each condition appears with equal frequency in every possible ordinal position. For example, an ideal Latin square for a within-subjects experiment with four conditions can be represented: 1) ABCD, 2) BADC, 3) CDAB, and 4) DCBA |
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Term
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Definition
| Inverview conducted with participants immediately after they have completed a study to determine exactly what they thought the researcher expected to find |
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Term
| Mixed (or mixed-model) designs |
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Definition
| Designs in which 1) at least one independent variable is manipulated on a between-subjects basis and 2) at least one other independent variable is manipulated on a whithin-subjects basis |
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