  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.
