The group administered interactive questionnaire: An alternative to   individual interviews
  Individual interviews are often considered to be the gold standard for researchers to understand how people think about phenomena. However, conducting and analyzing interviews is very time consuming. This paper presents the Group Administered Interactive Questionnaire (GAIQ) as an alternative to individual interviews and discusses the pros and cons of each data collection method. Use of GAIQ will be discussed in the context of a study that seeks to understand teaching assistants' reasons for the design of problem solutions for introductory physics. 
Edit Yerushalmi, Charles R. Henderson, William Mamudi, Chandralekha   Singh, and Shih-Yin Lin
physics.ed-ph