He earned his Ph.D. from the Department of Information School at Tampere University, Finland (2011), under the supervision of Professor Kalervo Järvelin. He also has a Master Science degree in Information Science from the College of Borås/Gothenburg. Special research interests are: Collaborative Information Seeking; Session-based searching; Task-based information seeking' User and Usage-oriented studies; Technology Enhanced-Learning Design; Participatory design and Ethnography.