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10 Cards in this Set
- Front
- Back
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why do we use quasi experimental designs? |
when we can't manipulate some variables or lack randomization |
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quasi experimental designs are weaker because... |
lacks control over assignment of participants and manipulation of causal variable |
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what types of claims can we make after conducting a quasi experimental design and how can they differ from true experimental designs |
they provide strong evidence for causation but cannot prove causation like an experimental design |
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list the types of research designs in order from most powerful to least powerful |
experimental, quasi experimental, correlational |
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what factors are used to measure the effectiveness of QEDs |
attrition, history effects, measurement, sensitization, maturation, |
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a pre-test is given, stimuli is presented, post-test is given |
pre-test post-test design |
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type of time series design: several measurements are made and then IV is introduced. ex. introducing mounted and bike police to downtown on the weekends |
simple interrupted |
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type of time series design: several measurements are made and then IV is introduced, taken away, then more measurements are taken. ex. introducing police and then taking it away after two weekends |
interrupted with reversal |
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type of time series design: police force is introduced to only one half of town (one control group) |
control group interrupted |
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examines two or more variables over time to examine how changes in one variable are related to changes in another variable |
comparative time series design |
