psychology research methods
- Created by: EmmaMoogan
- Created on: 10-03-23 18:46
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- Psychology research methods
- Laboratory experiments=Establish a cause and effect and find a relationship between the IV and DV
- Advantages = high degree of control over variables. Easy to replicate
- Disadvantages= High demand characteristics. Low ecological vaildiity
- Field experiments= Establish cause and effect conducted in real-life settings and situations
- Advantages=High ecological validity. Low demand characteristics
- Disadvantages = Low degree of control over variables. Difficult to replicate
- Natural experiments= IV varies naturally and isn't deliberately manipulated by the researcher
- Advantages = High ecological validity. Provides opportunities for research.
- Disadvantages= Random allocation to conditions isn't possible. Difficult to replicate
- Quasi experiment = where conditions already exist so IV can't change
- Advantages = High ecological validity. Opportunities for research.
- Disadvantages= Random allocation to conditions isn't possible. Difficulty to replicate.
- Opportunity sampling= anyone who is willing and available to take part at the time
- Advantages = Quick, convenient, economical
- Disadvantages= Can be bias and unrepresentative.
- Volunteer = Put themselves forward
- Advantages = Quick, convenient and economical
- Disadvantages = can be bias and unrepresentative.
- Systematic sampling = Every nth number of people in the target population
- Advantages= Avoids researcher bias
- Disadvantages = Not guaranteed to be representative
- Random sampling = everyone in the target population has an equal chance of being selected.
- Advantages = Avoids researcher bias
- Disadvantages = not guaranteed to be representative
- Stratified sampling = sample that reflects the proportions of people in different subgroups according to their frequency within the population
- Advantages = Highly representative
- Disadvantages = Time-consuming and inconvenitent
- Laboratory experiments=Establish a cause and effect and find a relationship between the IV and DV
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