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17 Cards in this Set
- Front
- Back
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What type of environment are lab experiments conducted in? |
Tightly controlled, artificial environments |
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What does the researcher do to the independent variable |
Deliberately manipulates it |
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What does the researcher do to the dependent variable? |
Measures it |
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What type of data does measuring the dependent variable produce? |
Quantitative |
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What does the researcher do about extraneous variables? |
There is an attempt to control/ minimise them as much as possible |
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What type of procedures are used? |
Standardised |
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2 advantages of lab experiments |
High internal validity High reliability |
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Explain high internal validity in lab experiments |
This is because the IV is the only thing being manipulated and other (extraneous) variables are controlled. It is therefore more likely that the IV (not any other variable) is directly responsible for any changes on the DV. |
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Conclude high internal validity in lab experiments |
This means cause and effect can be established. |
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Explain lab experiments having high reliability |
This is because the procedures in lab experiments are standardised. |
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Conclude lab experiments having high reliability |
This means that the experiment can be replicated to check the results are consistent. |
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2 disadvantages of lab experiments. |
Low ecological validity/ mundane realism High demand characteristics |
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Explain lab experiments having low ecological validity |
This is because the setting is artificial so unlikely to represent a real life situation. |
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Explain lab experiments having low mundane realism |
Participants are often asked to complete artificial tasks which they would not do in every day life. |
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Conclude lab experiments having low ecological validity and mundane realism |
This means we can’t generalise the results beyond the laboratory to real life |
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Explain lab experiments having high demand characteristics |
This is because participants are aware they are taking part in an experiment and may pick up cues (demand characteristics) that reveal the aim. This can lead to participants changing their behaviour in order to meet the experimenter’s expectations. |
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Conclude high demand characteristics in lab experiments |
This means the participants behaviour is unnatural and doesn’t reflect their true behaviour. |
