Comparing Harm Done by Mobility and Class Absence: Missing Stu- dents and Missing Data (2003)

I first met Michelle Dunn when she was an incoming statistics masters student and was assigned to be my Teaching Assistant. She agreed to do the work under one condition: that I would promise to take issues of academic integrity seriously. (She was appalled at how lax her undergraduate college had been.) I agreed, and she did an excellent job.