Causal Inference in Education Research Seminar (CIERS) How Many Friends Do You Have? An Empirical Investigation into Censoring-Induced Bias in Social Network Data Apr 12, 2017, 8:30-10:00 am EDT Weill Hall, Room 1220 The objective of the Causal Inference in Education Research Seminar (CIERS) is to engage students and faculty from across the university in conversations around education research using various research methodologies.