Correlational field studies
- Good for finding relations (how is b related to a)
- High external validity
- Use different sources or time-lagged design
- Questionaires often used, collect many data points for correlational field studies
Experiments
- Mostly done in the lab
- Good for studying causal link (does x lead to y)
- High internal validity
- Can be combined with Correlational field studies in the field
Meta-analysis
- Many studies pooled, averages a relevant
- Don't overinterpret outliers