Research methods - Experimental Design
- Created by: Rosiem2102
- Created on: 19-12-17 11:10
View mindmap
- Experimental design
- Matched pairs - Participants are paired together on the base of a shared variable and each person in the pair experiences a separate condition of the experiment
- Independent groups - Two separate groups of participants experience two different conditions
- Repeated measures - All participants experience the conditions of the experiment
- Types of experiment
- Laboratory experiment - Investigation is carried out in a controlled condition
- Does not represent a real-life experience (low mundane realism)
- Participants are aware that they are being tested (Hawthorne effect, demand characteristics)
- Lacking in generalisability (low external validity)
- High control over extraneous variables (Internal validity)
- Replication is more possible
- Field experiment - The IV is manipulated to be more natural
- Ethical issues of consent and privacy
- Loss of control over extraneous variables
- Behaviour is more valid and authentic
- High mundane realism
- Natural experiment - The researcher takes advantage of a pre-existing independent variable
- A naturally occurring event may only happen rarely
- Provide opportunities that the researcher wouldn't usually have
- High external validity
- Scope for generalising findings is limited
- Participants can't be allocated to experimental conditions
- Quasi-experiment - The IV is based on an existing difference between participants
- Can't randomly allocate participants to experimental conditions so there are confounding variables
- Often carried out under controlled conditions so shares the strengths of a lab experiment
- Laboratory experiment - Investigation is carried out in a controlled condition
Similar Psychology resources:
Teacher recommended
Comments
No comments have yet been made