Questionnaires are widely used in the social sciences and very often survey data form the basis for governmental and commercial planning or evaluation. Yet the

A thorough and comprehensive guide to the theoretical, practical, and methodological approaches used in survey experiments across disciplines such as political

Language comprises a major mark of humans compared with other primates and is the main vehicle for social interaction. A major characteristic of any natural lan

The book shows how to apply validity concepts when planning and conducting an evaluation, thereby making sure that the evaluation stays true to the purposes for