# The comparative method

- The Phenomenon: what is the object of study?
- Outcome: define the outcome and determine the binary conditions (i.e. what constitute presence/absence)
- The degree of analysis (which is flexible)
- How many cases?

- How many variables?

- What are the theories we wish to test?
- Determine the key variables as mentioned by those theories (as well as their binary conditions)
- Collect data on cases and create the truth table
- Outcome
- Variables

- Reduce and perform Boolean analysis
- Factoring, if required
- Edit, revise, edit, revise, etc

For more, see Charles Ragin, “The Comparative Method“.