Answer: micro-level analysis
Explanation: A micro-level analysis can be simply defined as a type of study in social sciences where analysis are made on the smallest unit possible and their social setting. By smallest unit, it means an individual in their social setting/environment a a very small group of people. So carrying out simple analysis or study on this individual or small group is referred to as micro-level analysis.
Dr. Jourdan is involved in micro-level analysis/study as his interest is on small group of people and their interaction.