I want Douglas T. Gurak to Chair this session. He has already reviewed this set of papers and most of the others submitted to my session & we are in agreement on the selections. The choice was difficult. There are many excellent papers. In fact, I compared some of the papers graded A by other organizers in the 2nd choice listing & those would have been given a C by us. All/most of the Bs in my session are better than As in the 2nd choice listing. I would prefer to add a 5th paper to this and the other sessions rather than have a discussant. Good backup papers for this session would be: Ann Kim et al; OR Andonirina Rakotonarivo/Schoumaker. There are also other papers ticked as backup that would fit into this session.