Quantitative data collection methods - Experimental research
5 important questions on Quantitative data collection methods - Experimental research
Define independent / causal / experimental (X)
i.e Medication
Define dependent / effect (Y)
Define laboratory or unbiased experiment
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Pretest/baseline measurement
What are the characteristics of unbiased experimental design
- Causal relationships are investigated; X --> Y
- X is the independent or cause variable, Y is the dependent variable or effect variable
- The cause variable precedes the effect variable in time
- Hypotheses are formulated about the results
- Groups are exposed to the experimental variable cause under circumstances that are as unbiased as possible
- This group of people is similar in composition in terms of several attributes
- Subjects are randomly assigned to the experimental and control groups
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