Digital access to large amount of heterogeneous data can create methodological biases regarding the discovery and exploitation of resources, particularly when it comes to Social Sciences. In order to provide relevant adaptivity for social scientists, it is important to fully consider their research practice diversity. To do so, we consider an activity-based approach for researchers' information search behavior. We have also conducted an experiment in a Cultural Heritage use case. The main result shows us that social scientists have the same research behaviors as those observed in exact Sciences.