Experimental methods
- Created by: jessicawarren
- Created on: 21-04-16 12:09
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- Experimental methods
- Lab experiment
- Example: Loftus&Palmer verb changing
- Artificial environments and controlled conditions
- IV manipulated, record affect on DV
- Controlled: no outside influences-higher validity
- Replication easier: results more reliable
- Lacks EV- people may act differently to how they would in everyday life
- Demand characteristics
- Field experiment
- Example: Christansen& Hubinette bank robbery
- IV manipulated in natural, everyday setting
- High EV- participants more likely to act how they would in everyday life
- Harder to replicate: less reliable
- Outside influences: less valid
- Ethical issues
- Natural Experiment
- Example: Rutter Romanian orphans
- Change in Iv would have happened anyway
- Record effect on DV
- Allows research to be conducted on 'sensitive situations'
- High EV- natural, real situations
- Difficult to generalise- not representative
- Less sure of cause and effect due to no controls
- What is an experiment?
- Only method in psychology that can claim to establish cause and effect
- Involves the manipulation of one variable while controlling all other variables
- Lab experiment
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