www.bbcnoun.com.ng 9/10 What is the criterion for judging a theory? Its usefulness Which of the following research concepts are more common in non-quantitative studies? Research questions Which of the following statements is the most important characteristic of the research problem statement? It must provide adequate focus and direction for the research Which of the following statements about the characteristics of a good theory in research is TRUE? The data derive significance from the theory or theories which they fit Which type of variables cannot be altered by the experimenter in a research study? Attribute variables Which of the following terms are referred to as the building blocks of research? Concepts The boundaries of a research study is defined by the term ______ Delimitation In research, theories are linked to particular concrete settings by means of _____________ Hypotheses Which of the following types of variables is manipulated by the researcher in a research study? Independent variable Which of the following statements is the primary purpose of review of literature? To assist the researcher in attacking the research problem