Laboratory Experiments-Strengths
- Can be replicated-increases validity of results
Laboratory Experiments-Weaknesses
Field Experiments-Strengths
- More valid and natural behaviour-high external validity
Field Experiment-Weaknesses
Natural Experiments-Strengths
Natural Experiments-Weaknesses
- Participants may not be randomly allocated-Unsure if IV affected the DV
Quasi Experiments-Strengths
- Can be replicated-increases validity of results
Quasi Experiments-Weaknesses
-Confounding Variables can occur-Cannot randomly allocate participants to conditions
Independent Groups Design-Strength
- Easy to allocate participants to groups-Uses Random Allocation
Independent Groups Design-Weaknesses
Repeated Measures Design-Strengths
Repeated Measures Design-Weaknesses
Matched Pairs Design-Strength
No order effects-Partcipants only experience one condition
Matched Pairs Design-Weaknesses
Random Sampling-Strength
-Free from researcher bias-The researcher cannot pick the participants for each condition
Random Sampling-Weaknesses
Systematic Sampling-Strengths
- Provides a fairly representative sample
Systematic Sampling-Weaknesses
Stratified Sampling- Strengths
- Provides a representative sample of the target population-Generalisation can occur
Stratified Sampling-Weaknesses
Opportunity Sampling-Strength
-Quick and cheap to get participants
Opportunity Sampling-Weaknessess
Volunteer Sample-Strengths
-Easy to get a sample- “They come to you”
Volunteer Sample-Weaknesses