Connecting with others in the midst of stressful upheaval on September 11, 2001.

This study was originally planned from September tenth through twelfth to assess concurrent use of three real-time data sources during a usual day. When the World Trade Center towers collapsed, the plan expanded to describe 24-hour blood pressure and heart rate, natural environment word use, television viewing/radio listening, and self-reported diary feelings for six undergraduate students in the midst of stressful upheaval. Heart rate, "we" word-use and television viewing/radio listening increased over time. Higher negative and lower positive feelings/emotions occurred during morning hours on September 11. Students connected with others and shared good thoughts. Measurement with real-time data sources was informative.