Types of Experiment Flashcards
1
Q
What are the 4 types of Experiment?
A
- Laboratory
- Field
- Quasi
- Natural
1
Q
What happens in Laboratory Experiment?
[3]
A
- An experiment that takes place in a controlled environment
- Researcher manipulates IV and records effect on DV
- Maintains strict control of extraneous variable
2
Q
What happens in Field Experiment?
[2]
A
- An experiment conducted in a more natural environment
- Researcher manipulates the IV and records effect on DV
3
Q
What happens in Quasi Experiment?
A
An experiment where IV hasn’t been determined by researcher, but it naturally just exists
4
Q
What happens in Natural Experiment?
A
- An experiment where IV isn’t brought about by researcher, so it would’ve happened anyways even if researcher wasn’t involved
- researcher records effect on DV
5
Q
What is Strengths of Lab?
[2]
A
- High degree of control - experimenter controls all variables, so more likely to establish cause and effect
- Replication - researchers can repeat experiments and check results
6
Q
What are Limitations of Lab?
[2]
A
- Demand Characteristics - participants could know they’re being tested
- Low ecological validity - high degree of control, so artificial situation
7
Q
What is Strengths of Field?
[2]
A
- High ecological validity - more representative of real world
- Less demand characteristics
8
Q
What are the Limitations of Field?
[2]
A
- Ethical Considerations - invasion of privacy and no informed consent
- Loss of control - less easy to replicate
9
Q
What are the strengths of Quasi experiment?
A
- High internal validity - usually done in lab conditions
- High level of control and replicability
10
Q
What are the Limitations of Quasi experiment?
[2]
A
- Can’t randomly allocate participants - confounding variables may be present.
- Less external validity - environment is artificial and unfamiliar so results can’t be generalised beyond setting
11
Q
What is the strengths of Natural experiment?
[2]
A
- Provides oppurtunities - that may have been impossible otherwise due to ethical/practical issues
- High external validity - you’re dealing with real life issues
12
Q
What are the Limitations of Natural Experiment?
[2]
A
- Natural occuring events may be rare - so experiment is less replicable, and hard to generalise findings
- Very difficult to randomise participants into groups so confounding/extraneous variables become a problem
13
Q
What does ecological validity mean?
A
How easy it is to generalise findings of a study into real life
14
Q
Is the environment of the quasi study controlled?
A
Yes
