Term
Key Terms: define
Dichotomous variable |
|
Definition
Having two attributes
ex. gender |
|
|
Term
Key Terms: define
Experimental group |
|
Definition
| recieves independent variable |
|
|
Term
Key Terms: define
Control group |
|
Definition
| does not recieve anything; placebo |
|
|
Term
Key Terms: define
Double blind experiment |
|
Definition
| neither subjects nor the experimenters know which is the experimental group and which is the control group |
|
|
Term
Key Concepts
What are the 3 components of the classical experiment? |
|
Definition
- Pre and post tests
- Experimental and control groups
- Random assignment (Central feature of CE)
|
|
|
Term
Key Concepts
What are the 4 threats to causal validity in classical experiments
|
|
Definition
- Internal validity
- Construct validity
- External validity
- Statistical conclusion validity
|
|
|
Term
Key Concepts
What are some of the threats to Internal validity with explanation of each?
|
|
Definition
- History - events that occur between the pre and post test that might effect the overall results
- Maturation - growth and intellectual change might have an effect on the experiment.
- Testing - the fact that your testing a person might effect how they respond.
- Statistical regression - am I only studying the extreme groups?
- Selection bias - who decides to volunteer for my study will effect my results.
- experimental mortality - people may drop out of the study.
|
|
|
Term
Key Concepts
explain what threats to Internal validity means in short |
|
Definition
| The problem of threats to internal validity refers to the possibility that conclusions drawn from experimental results may ot accurately reflect what went on in the experiment itself. |
|
|
Term
Key Concepts
Explain what threats to Construct validity means in short |
|
Definition
| construct validity is concerned with with generalizing from our observations in an experiment to actual causal processes in the real world. |
|
|
Term
Key Concepts
Explain what threats to external validity means in short |
|
Definition
| Do results from experiments in one setting appear in other settings |
|
|
Term
Key Concepts
Explain what threats to Statistical Conclusion validity means |
|
Definition
| Large samples of subjects, up to a point, are more representative of the target population than a smaller sample. |
|
|
Term
Key Concepts
Experimental studies are concerned with.....? |
|
Definition
| external validity threats |
|
|
Term
Key Concepts
Exploratory field research is concerned with....? |
|
Definition
| Internal validity threats |
|
|
