Update README.md

README.md

@@ -12,7 +12,8 @@ This repository consists of data from 95 participants playing the SteamVR game "
 - **Fidelity-based Presence Scale (FPS) and Simulator Sickness Questionnaire (SSQ) responses** in consolidated Excel sheets and individual CSV files
 - **MP4 recording** of each session
 - **Project_Properties CSV** capturing metadata about the recording session
-- **PID Information Excel Sheet** with PID, date and time of data collection, gender of participant, device order, and session quality notes
+- **PID Information Excel Sheet** with PID, date and time of data collection, gender, device order, and session quality notes
+- **Background Survey Responses** with PID, gender, age, hand dominance, frequency of playing video games, skill level in video games, frequency of experiencing virtual reality, and skill level in virtual reality experiences 
 - **PID-Specific Notes** [Coming Soon]
 
 ## File Hierarchy