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| each participant serves in only one condition of the experiment |
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| An experimental design in which each participant serves in more than one experiment |
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Average or most representative score in a set of observations
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A method of control in within subjects studies whereby the reachers varies the order in which the participants experience the different experimental conditions (by presenting the conditions in different orders to different participants.)
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| Summarize or describe a set of observations |
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| Statistics used to make inference , that is, to interpret or draw general conclusions about a set of observations |
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| An indicator of the strength of the relation b/t 2 or more variables. 2 common indicators are r and d |
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involves the trade off between internal and external validity
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A study that has more than one independent variable
and completly crossed every level of every IV appears in combination with every level of every other IV |
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an experimental design used to control for order effects in a within-subjects design
equal frequency in every possible way
ordinal position
abcd, badc, cdab, and dcba |
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Multiple Measures Multiple Methods
to assure that our findings are not artifacts of our procedure |
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is the effect of one of your independent variables on the dependent variable, ignoring the effects of all other independent variables
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| selecting people in the top/ or bottom half for an experiment |
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One or more between-subjects factors and one or more within subject factors 2) Also refers to experimental design that includes both manipulated independent variables and measured participant design. (Also known as expericorr design)
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physical setting in an experiment is similar to real world settings. Experimenters IV and DV are most likely to operate.
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| An EXTREME score, usually farther that 3 standard deviations away in any direction from the mean |
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| A research method in which a researcher adds new conditions to a quasi-experiment to help establish the size of an effect to test for the influence of conceivable confounds or both. |
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a set of data in which participants' scores are confined to a narrow range of possible scores
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| when one rejects the null hypothesis when it is true |
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mistakenly failing to reject the null hypothesis when it is false. Claiming the IV did not have an effect when it did
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| There is only one IV and only 2 levels of this variable (simplest kind of experimental design) |
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| reduced or eliminated by homogeneous sample |
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