This is an ideal text for advanced courses in research methods and experimental design. It argues that the methodology of quantitative research is a unified discipline with basic notions, procedures and ways of reasoning which can be applied across the social, behavioural and life sciences. Key designs, models and methods in research are covered by leading contributors in their field who seek to explain the fundamentals of the research process to enable the student to understand the broader implications and unifying themes.
In the empirical sciences data are used for investigating substantive hypotheses and theories, and for making practical decisions. Many researchers are mainly interested in the substantive aspects. These theories contain constructs, and in empirical research constructs must be operationalized and data must be analysed. Although the interest is in substantive hypotheses and theories, other theories are always needed for operationalizing constructs and analysing data. These types of theories are called auxiliary theories (Hox ...