Pew Research Center is committed to meeting the highest methodological standards — and to exploring the newest frontiers of research. Learn more about the methods the Center uses to conduct objective, ...

Learn how to select the best research methodology for your PhD, including qualitative, quantitative, and mixed methods.

This book also contains results of intercomparison trials of several detection methods. These trials have had a number of important consequences. First, they have allowed the validity of a method to ...