Rezwan’s correct, the key is to craft the right questions. For my graduate work I constructed 5 part Likert Scales then tested attitudes. The Likert scale is a simple and valid way to test subjective attitudes. Its simple to construct with attitudes ranging from ex. Strongly Disagree to Strongly Agree in a five part range. However, validity depends on an insitefull if not artfull selection of the appropriate questions.
