1. Selection Bias and Heterogeneity in Severity Models - Some Insights from an Interstate Analysis Open Access Author: Shin, Seunghwan Title: Selection Bias and Heterogeneity in Severity Models - Some Insights from an Interstate Analysis Graduate Program: Civil Engineering Keywords: safetyseverity distributionselection bias File: Download 12_SeunghwanShin_Thesis.pdf Committee Members: Venkataraman Shankar, Thesis Advisor/Co-Advisor