Because research has shown that principals' practices can significantly impact teaching and learning in their schools through multiple avenues, it is critical to understand the validity of tools that measure principal practice. While the field has relied heavily on self-report surveys, little is known about their validity. This study compares…

Surveys, content analyses, and laboratory experiment/judgment task strategies continue to be the dominant research methods used in mass communication research. Some researchers, however, are advocating method triangulation--the use of at least two and as many as five methods within the same study. A manual and computer search of several databases…