Strengths and Weaknesses
- Created by: urooj.x
- Created on: 23-04-18 21:02
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- Strengths vs Weaknesses
- Experimental Designs
- Repeated Measures
- Fewer participants need to be recruited, saving time and money.
- Comparing ‘like with like’ so differences aren’t due individual differences between participants
- Participants may work out the independent variable and change their behaviour (demand characteristics).
- The task may need to be changed between participants due to extraneous variables.
- Participants may behave/perform worse on the second condition due to boredom or fatigue (tiredness) effect.
- Participants may perform better due to practice effects.titled
- Independent Measures
- Same task can be used in both conditions as participants won’t be familiar with it.
- More participants need to be recruited as they cannot be used more than once per condition
- Differences between conditions could be due to participant vaiable.
- Repeated Measures
- Sampling Methods
- RANDOM
- Likely to give a representative sample.
- No bias
- Certain types of people are over-represented and others are under-represented or missing from the sample.
- Opportunity
- Quick and convenient compared to random sampling
- Tends to be biased and unrepresentative
- Self selective
- Not much effort has to be put in it.
- Full consent.
- Biased
- Ø Types of people are more likely to volunteer.
- Over-represented in the sample
- RANDOM
- Observation
- Experimental Designs
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