6.2 Differential Research methods 1)Men and women are compared on their knowledge of political events. This is an example of A)differential research. B)correlational research. C)cross-sectional research. D)experimental research. 2)The correlational research approach is conceptually similar to A)mathematical research. B)experimental research. C)differential research. D)archival research. 3)An example of a qualitative dimension on which groups are differentiated is the A)sex of the participant. B)number of participants in a category. C)time it takes to respond to a task. D)age of the participant. 4)In differential research, the classification variable is the A)stimulus variable. B)response variable. C)independent variable. D)dependent variable. 5)Which of the following is always used in differential research? A)Random assignment of participants to groups. B)The Pearson r or the Spearman r. C)Random selection of participants to ensure a representative sample. D)Groups differentiated on the basis of preexisting variables. 6)Differences between groups defined by preexisting variables is the focus of A)naturalistic and case-study research. B)correlational research. C)differential research. D)experimental research. 7)In ________ research, we observe two or more groups that are distinguished on the basis of one or more preexisting variables. A)correlational B)random sampling C)differential D)experimental 8)In differential research, the variable that differentiates the groups A)can be established after the start of the research. B)must be a quantitative variable. C)must be a qualitative variable. D)can be either qualitative or quantitative. 9)In differential research, the classification variable is termed the A)independent variable. B)dependent variable. C)a priori variable. D)category variable. 10)Differential and correlational research are similar, because A)the independent variable is manipulated. B)the dependent variable is manipulated. C)both study the relationship between variables. D)they both examine causation.. Â